Library/ The Silo Saga

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Juliette works in Mechanical.

An unidentified runner’s footsteps sound on the stairwell below Juliette.

Donald Keene is a newly elected congressman serving in Washington in 2049.

Jahns tentatively identifies the young IT technician summoned by Bernard as Lukas.

Paul Thurman is a senator from Georgia.

Neighboring Silo

The next hollow contains another sensor tower.

The silo is a buried cylindrical home.

Charlotte is Donald’s sister and is serving in the field overseas.

Bernard Holland

Bernard Holland runs IT.

Anna is Senator Thurman’s daughter.

Marnes describes Walker as crafty and says he never leaves his workshop.

Shirly is Marck’s wife.

Mechanical employs Juliette, the deputy’s preferred candidate for sheriff.

The IT department is circulating Allison’s white paper to help people recover information they accidentally deleted.

Peter Billings is among the candidates being considered for sheriff.

Helen is Donald’s wife.

Victor works in the psych office across the hall from Troy.

Deagan Knox is head of Mechanical.

Courtnee is a young plumber who treats Walker kindly when visiting his workshop.

Elise is the younger girl sheltering beside the teenage mother.

The Order makes up the remainder of the enormous book after the Pact.

Holston wears a black carbon undersuit beneath the cleaning suit.

Silo One is the destination Bernard contacts to report Juliette’s disappearance from view.

Peter Nichols is Juliette’s father and works at the nursery on twenty.

Holston is the silo’s sheriff.

Marnes is Holston’s deputy.

The older girl tells Juliette that the children’s parents are dead.

Bernard calls the hidden material he is showing Lukas their Legacy.

The elderly McNeil is associated with Supply.

Holston requests the mayor after entering the holding cell.

Rickson is the teenage boy who attacks Juliette with a wrench and receives a knife wound in his leg.

Anna identifies Erskine as one of the three principal planners alongside Victor and her father.

People sent to cleaning are condemned to death.

Raph has pale arms strengthened by years of mining.

Mission Jones will turn seventeen the next day.

Mick Webb is a congressman and an old college friend of Donald’s.

Solo’s father was apprenticed to the head of IT.

Solo retreats into a hole beneath the server-room floor that is covered by a sliding metal grate.

Solo identifies the diggers as machines that excavated the silo.

Central Staircase

The spiral staircase has steel treads and a railing worn by generations of use.

Marck is a mechanic who guides Marnes and Jahns to the mess hall after his second shift.

Eren heads Ops and occupies the psychologist’s desk down the hall.

Allison retrieves remnants of data that had been deleted and overwritten many times on the silo’s servers.

Neighboring Silo Server Room

The other silo’s server room is at least as large as Juliette’s generator room and much larger than the cafeteria.

Jahns expects the sheriff to take guidance from the Pact.

Troy awakens in 2110 beneath the hills of Fulton County, Georgia.

Donald has seen drone and missile camera feeds that show targets’ final moments clearly enough for review frame by frame.

Mechanical and Supply Uprising

Walker identifies the angry gathering following his suit revelation as the beginning of an uprising.

The outside view shows lifeless hills.

A decaying city skyline is visible beyond the hills.

Allison was Holston’s wife.

Hank is the down-deep deputy on level 120 and has known Juliette for a long time.

The coffins hold living people in rows extending toward distant curved walls.

Jimmy’s mother abruptly enters his classroom and pulls him out by the arm.

Neighboring Silo Staircase

The other silo’s stairwell has working emergency lights that give off a green glow.

The cafeteria’s projected outside view is becoming blurred by dirty camera lenses and airborne grime.

Scottie trained as a shadow under Juliette, who taught him to preserve electrical ties.

An unidentified source of whimpering is audible inside the flooded levels.

The silo’s airlock is on the other side of Holston’s office from the cafeteria.

Bobby operates the excavator as work resumes on widening the opening.

Nelson heads the cleaning lab.

Bernard directs that Sims top up Jahns and Marnes’s canteens.

Charlotte's Radio

Charlotte’s partly assembled radio can receive several stations.

Nano Treatments

Nano treatments are reputed to delay the pain of aging without making a person immortal.

Winning the lottery gives a couple a year to try to have a child.

The deep freeze holds women, children, and men unable to complete their shifts.

Rodny is Mission’s best friend.

Cleaning Helmet

Holston breathes oxygen circulating within his helmet while the airlock fills with argon.

Connecting Tunnel

Juliette’s proposed tunnel follows an arc between the generator rooms of Silos 18 and 17.

Juliette's Knife

Juliette takes a knife from a rack in the other silo’s kitchen.

The server room is protected by the most heavily fortified door in the silo.

The wall chart shows evenly spaced circles with internal detail and connecting lines.

Elise's Memory Book

Elise takes her memory book with her in a shoulder satchel as the group moves downstairs.

A brown puppy frightens Jimmy before licking Courtnee’s chin.

Jimmy thinks Miles is the twin pressing his ear against the concrete to listen to the digging.

Juliette reports that the heat tape taken from IT fell apart easily.

Solo points out silo twelve on the map.

Silo One Communications Room

The communications room has an array of fifty numbered headset receptacles.

Upper Cafeteria

The cafeteria at the top of the stairs is one of the silo’s widest rooms.

Silo Seventeen Key

Jimmy’s father says only two keys to the silo exist.

Darcy is the night guard who was first on the scene and alerted Deputy Stevens.

McLain was already head of Supply during Jahns’s first term.

Mrs. Crowe taught Mission and Frankie and encouraged Frankie to pursue farming.

Jenkins is among the mechanics Juliette considers recruiting to confront the silo’s leadership.

Juliette's Diving Suit

Juliette adapts a complete cleaning suit by drilling and threading a hole in its helmet collar for an air hose.

Father Wendel is bald and wears white robes.

Drone Launch Lift

The launch lift is behind a waist-high garage door wide enough to accommodate the drones’ wingspan.

The pills given to Troy are bitter.

Backup Generator

The backup generator is being dismantled to replace its gaskets.

Jimmy reaches for a long black gun leaning against the wall while asking to accompany his father.

Young Mother's Baby

The baby is a girl only a few months old.

The generator room is so loud that Jahns and Marnes use ear protection.

Containment and Disposal Facility

The Containment and Disposal Facility is nicknamed CAD-FAC.

Donald's Design

Donald originally produced the architectural drawing for a senior-year biotecture class.

Fitz is an oilman with missing teeth.

Holston and Marnes investigated George’s death in Mechanical.

Cam is Mission’s friend and fellow porter on the tandem body haul.

Porters carry heavy loads up the stairs to meet increased post-cleaning demand.

An IT security worker covers the sheriff’s office while its regular officers are away.

The uprising took place a century and a half before Holston’s confinement, according to Jahns.

Walker's Workshop

Walker’s shop receives pumps for motor respooling.

Drone Control Room

The room at the end of the hallway contains about a dozen flight-control stations.

A plastic headset is stored in a cloth case fastened inside a server.

Marcus pulls his twin brother back from the wall with visible excitement.

Juliette's Watch

Juliette consults a timepiece on her wrist that appears to Jahns to be working.

Silo One Medical

The underground chamber where Troy wakes contains rows of occupied coffins.

Shaw is a green-eyed boy with short-cropped hair who is slightly older than Elise.

Bobby reports that Erik can spare girders for only a thousand yards of tunnel.

An older man who approaches Troy in the cafeteria is thin and has wispy white hair.

Anna says Silo Forty lost communications about a year earlier.

Anna’s message has the subject Urgent—The Pact.

Dr. Sneed is an older, heavyset doctor with bushy eyebrows and sparse hair.

Dr. Wilson draws Donald’s blood after he is awakened.

National Convention

The National Convention is due in a couple of years, and Thurman wants Donald and Helen there.

Dawson is the new third-shift foreman.

Lukas’s mother pressures him about missing opportunities in the lottery to give her grandchildren.

The holding cell is usually entered only to clean it unless someone is in custody.

Mission's Mother

Mission’s mother died seventeen years before his approaching seventeenth birthday.

Neighboring Silo Mechanical

The silo schematic shows a room jutting from Mechanical that Juliette does not recognize.

Jahns proposes a power holiday to permit maintenance and commemorate those who clean.

Jimmy's Flashlight

Jimmy wears down his flashlight batteries by repeatedly checking whether it works.

Nelson is the head of the cleaning lab.

IT Conference Room

The conference room where IT receives Jahns and Marnes is attached to the main foyer.

Sheriff's Office

Holston’s office is between the cafeteria and the silo’s airlock.

Allie is Mission’s close friend and was his first, briefest romance.

Microscopic machines in the blood are intended to repair damage from freezing and thawing at the cellular level.

The generator has a rapidly spinning shaft connecting two huge machines.

Mission's Father

Mission’s father farms the same plot worked by generations of Jones boys.

Silo Twelve Reports

The Silo Twelve reports attribute the disaster to failures by an IT shadow, the IT head and the Security chief.

Display Program

Allison reports finding programs used to create realistic screen pictures.

Neighboring Silo IT

The other silo’s IT department is on level thirty-four.

Neighboring Silo Sump Pumps

The pumps Juliette wants to restore are in sump basins at the very bottom of the silo.

Porter Dispatch

Dispatch assigns Mission and Cam a tandem haul.

Rite of Initiation

The candidate assessment uses sensors in the candidate’s headset to evaluate fitness.

Silo Ranking List

A list ranking all the silos is among Victor’s oldest files and has been accessed recently.

Yani is a large security officer guarding the gate during the chaos.

Juliette's Air Compressor

Juliette is working on a large wheeled air compressor with trailing hoses.

Deputy Marsh escorts Juliette fifty levels from Hank’s station to the mids.

The Nest is where Mission grew up with his close group of friends.

Generator Control Room

The generator control room has a thick door that reduces the machinery’s noise almost to nothing.

Jahns and Marnes stop at IT on the thirty-fourth level.

Jahns and Marnes's Canteens

Jahns and Marnes share Marnes’s canteen during their descent.

Silo Seventeen Security Radio

The wall radio is locked behind a metal cage with accessible switches and dials.

Captain Brevard

Captain Brevard is Silo 1’s Security chief.

According to Jeffery, Wyck stopped sending technicians out to repair computers the previous day for safety reasons.

Hank’s radio has been disassembled and wired together across Walker’s workbench for examination.

Neighboring Silo Lower Farms

The lower farms have been supplying Juliette and Solo with food for weeks.

Charlotte believes the map’s lines lead to a better place marked S-E-E-D.

Neighboring Silo Supply

Juliette intends to collect additional materials from Supply for a new project.

Silo One Cafeteria

Troy reaches the cafeteria after taking the lift upward.

Anna's War Room

Anna’s workroom has a table displaying a grid of fifty silos under glass.

Lower Dispatch is on level one-twenty and is kept busy by Supply.

Walker's Portable Radio

Walker’s unfinished portable radio is slightly larger than a deputy’s hip radio and currently uses a large external battery.

Donald uses his phone to check the time while waiting to meet Thurman.

Mechanical Levels

Mechanical’s upper entrance is at level one-forty.

Mining Blast Charges

Walker reports a proposal to rig their side of the tunnel to explode if the dig encounters bad air.

The document labeled Seed depicts lines from every silo converging at a single point.

Silo One Level Fifty-Four

Level fifty-four holds ammunition, armor, helmets, medical supplies and rations.

Supply’s entrance is on level 110.

Two Younger Boys

Juliette estimates the two younger boys to be ten or eleven years old.

Bernard keeps the key to the server case around his neck.

Juliette's File

The staff are assembling a file on the cleaner for the man they believe is Thurman.

Juliette’s ID is rejected by the scanner at IT’s security gate.

Planning Committee

The planning committee enters the dig claiming Juliette’s authorization and carrying a note from her office.

Sammi suggested that Lukas replace a server control board.

Sheriff's Badge

Holston leaves his metal star on the desk before entering the holding cell.

Knox uses a large blueprint on the wall to plan the approach to Supply.

Operation Fifty of the World Order

Operation Fifty of the World Order admits Lukas Kyle when he is designated successor to silo eighteen’s leadership.

Frankie is a tall, lanky childhood friend of Mission who works at the farms’ main security gate.

Lyn helps spread rescued files over dormitory bed springs.

Joel is a capable porter two years older than Mission.

Deputy Stevens photographs the interior of the bloodstained cryopod.

Harper was a refinery worker before becoming a soldier.

Neighboring Silo Church

Newcomers have found a church in the silo and are gathering food there.

Neighboring Silo Uprising

Solo dates the fighting that drove him into hiding to thirty-four years earlier.

Silo One Level Thirty-Four

Level thirty-four contains Troy’s office.

The bazaar occupies all of level one hundred.

Jahns feels guilty about imagining intimacy with Marnes because of the memory of her husband.

Donald's Protective Suit

Donald uses a shoelace tied to the suit’s back zipper to close it without assistance.

Marsha is Juliette’s assigned assistant and previously served the last two mayors.

Outside Sensors

Cleaning the outside sensors involves wiping their lenses.

Silo One Elevators

The lift has seventy numbered floor buttons.

The Tragic Historye of Romeus and Juliette

The Tragic Historye of Romeus and Juliette begins with a sword fight.

The down deep begins at level ninety-seven and comprises the silo’s bottom third.

Emergency Barracks

A bunk room off the storeroom hallway has recent footprints in the dust and gaps where two beds have been removed.

Helen says Donald’s dog misses him while he is away.

Mechanical Barricade

The barricade seals Mechanical’s security entrance from floor to ceiling and wall to wall.

Medical Recovery Drink

The drink prepared for a waking worker contains two scoops of green powder mixed into warm water.

Neighboring Silo Thirtieth-Level Hydroponics

The hydroponic farms on level thirty are dark and contain rotted plants hanging from suspended pipes.

Porters' Body Bag

A plastic bag separates Mission’s head from the dead man’s head during the tandem haul.

Children's Picture Books

The surviving children’s books depict vivid landscapes and animals that many residents doubt existed.

Juliette's Multi-tool

Juliette uses the smallest pick on her multi-tool to release an electrical tie without breaking it.

Lukas's Star Chart

Lukas’s chart is a large sheet of paper marked with dots, grid lines, and small notes.

Midlevel Deputy Station

Jahns and Marnes spend the night at the midlevel deputy station during their ascent.

Mission's Knife

Mission carries his knife in a sheath with a clasp around the handle.

Neighboring Silo One-Hundred-Thirty-Sixth Landing

Level 136 is the last dry landing above the flood.

Neighboring Silo School

The school landing vibrates with distant heavy traffic as people scramble on the stairwell.

Office for Psychological Services

Troy regards the Office for Psychological Services as more responsible for designing life in the facility than any individual architect.

Frankie says Roker began growing his own beans in Dispatch.

Silo One Power Plant

The silo’s power plant is on level sixty-eight.

Silo One Security

Security transports Hal to the deep freeze and helps restrain him for sedation.

The wool scrubbers attach to the front of the cleaning suit.

Donald's Prescription

Donald takes two pills from his prescription vial before returning to dinner.

Down-Deep Deputy Station

The down-deep deputy station is near the center of its forty-eight-floor precinct.

Victor says his pact with Thurman haunts him as he prepares to end his own participation.

Troy awakens beneath the hills of Fulton County, Georgia, in 2110.

Shirly describes the mines as farther down than the mechanics’ living and working area.

Helen is staying in Savannah while Donald is in Washington.

Solo considers silo sixteen a possible origin for Juliette.

Troy’s office is on level thirty-four.

Tracy is John’s colleague and had an affair with him in Milan.

The stranger who approaches Elise has a dark beard and bright eyes and wears brown coveralls.

Remmy is Father Wendel’s acolyte.

Merriman hands responsibility for his post to Troy at the end of his shift.

Morgan is Mission’s former caster.

Mrs. Crowe identifies Jeffery as the head of Security where Rodny is located.

Neighboring Silo Cafeteria

The other silo’s cafeteria receives dim green light from the stairwell’s emergency lights.

Saul is one of the lead radio technicians.

Victor's Annotated Report

Anna says Victor covered the original report with notes.

Charles Rhodes is the governor of Oklahoma.

Doctor Whitmore

According to Darcy, Doctor Whitmore says the identification files are corrupted.

Gable is the silo head working across the hall from Ops.

Main Generator Control Room Operation Manual

The Main Generator Control Room Operation Manual consists of papers bound with brass fasteners.

Neighboring Silo Airlock

A corpse is caught in the gap between the other silo’s partly open outer doors.

The Pact memo consists of one aged sheet with five signatures.

Sample Containers

The air-sampling containers hold paired gaskets and strips of heat tape.

Emergency Personnel Room

The room marked Emergency Personnel uses a different access code from the other rooms Donald knows.

Heat-Tape Blanket

The blanket is made with heat-tape strips whose edges are sealed using a torch.

Juliette’s mother

Juliette’s mother worked as a delivery nurse.

Pieter arrives at Supply ahead of schedule with members of his refinery crew.

Charlotte estimates that the bunker busters weigh sixty kilos.

The Pact memo rules out letting two facilities reach E-Day for redundancy.

The inner lock is used for Nelson’s precautionary scrub-down.

Jimmy's Improvised Pack

Jimmy makes a backpack by knotting the arms and legs of spare overalls into loops and cinching the neck shut.

Mission's Brother

Mission’s brother still meets him at the Nest from time to time.

Pickens ate a neighbor’s pet rat.

Church Scripture

The church’s scripture is an ornate gilded book protected by a bent-steel cage on a welded podium.

Jack Brent was put to cleaning eight years before Holston’s confinement.

Juliette's Ring

The ring in Juliette’s wooden box is a woman’s wedding ring.

Mrs. Crowe's Letter

Mrs. Crowe’s letter for Rodny uses an envelope with previous recipients’ names crossed out.

Neighboring Silo One-Hundred-Thirty-Seventh Level

Floodwater stands at least two feet above the landing on level one-thirty-seven and extends inside an open doorway.

Neighboring Silo Sheriff's Office

The other silo’s sheriff’s office contains a pile of largely intact bodies.

Neighboring Silo Suit Lab

The Suit Lab has better workbenches and equipment than Juliette had in Mechanical.

Pam works in the cafeteria and helped Juliette settle into her new apartment.

Rodny hides a folded note in his palm and transfers it to Mission during their handshake.

Silo One Airlock

A concrete ramp beneath the tent carries a tightly packed crowd underground.

Solo's Paper Parachutes

Solo makes paper parachutes with folded paper, strings, and small metal washers.

Solo's Second Flashlight

Solo discovers a second flashlight already switched on inside a room in Supply.

Supply has made two dozen heavy cylindrical bombs.

Thurman's Apartment

The apartment assigned to Donald is in the operations wing, down the hall from his old office.

Tom Higgins identifies himself as head of the Planning Committee.

Walker’s note tells Juliette the truth is a joke and says they are good in Supply.

Blasting-Cap Transmitters

Walker says blasting-cap transmitters from the mining storehouse can enable the radio to transmit.

Georgia contains the Fulton County hills beneath which Troy awakens.

Jimmy's Backpack

Jimmy leaves his backpack behind when his mother takes him from class.

Bernard says he knew Lukas’s father and considered him a good man.

Mechanical Mess Hall

Mechanical’s gate guard suggests that Jahns and Marnes wait in the mess hall until Juliette finishes work.

Mrs. Crowe's Wheelchair

Mrs. Crowe’s electric chair receives power through a line descending from the ceiling to a pole on its back.

The box marked 3 is used for samples from the dead cleaner’s suit.

The surface camera tower is a concrete structure about eight or nine feet high.

Silo One Communications

The radio technicians wear orange coveralls.

Silo Seventeen File

Donald requests the available information on silo seventeen under the pretense of refreshing his memory.

Supply has manufactured forbidden guns for the planned attack.

Tennessee Facility

Donald remembers the Tennessee tent as the location where he cut the ribbon.

Thurman's Badge

The ID badge left for Donald has a barcode and a name but no photograph.

Wyck offers a private delivery job moving a package half a dozen levels from Supply for two hundred chits.

Charlotte still makes her bed with the precision she associates with the Air Force.

The historical account says the Civil War killed more Americans than all subsequent conflicts combined.

Tracy wants John to come to Colorado to survive with her group.

Fifty-Seventh Level

Level fifty-seven is an apartment floor.

George's Case File

The closed file on Juliette’s former lover contains many notes in Holston’s handwriting.

A local rock band performs a sound check on Georgia’s main stage.

Anna holds a post at MIT from which she is taking leave to help with Thurman’s project.

Mama Jean makes the oatmeal and cornflour cookies in Juliette’s package.

Secret Service agents guard Thurman during his visit to Kramerbooks.

Silo Six’s head has selected and processed a replacement and wants Troy to formalize the induction.

The lounge adjoins the cafeteria at the top of the staircase.

Juliette stays awake at night listening to Walk’s radio.

John is married to Barbara and has a nine-year-old daughter named Emily.

April is Tracy’s older sister and works as a schoolteacher.

Remy is April’s husband, an accountant and survivalist.

Mountain Bunker

The shelter is an expanded existing bunker inside a Colorado mountain.

John believes some members of Tracy’s group appear on agency watch lists.

Mountain Cryopod

The mountain cryopod was built using stolen plans.

Silo One Contact

The man on the headset has a deep, hollow voice and questions Lukas about his duties.

Tracy's Instructions

Tracy writes instructions for opening the bunker gates in case no one else remains.

Jones works with the power plant on level sixty-eight.

Wyck directs a porter accepting his job to ask for Joyce at the Supply counter.

Juliette's Pipe Flask

Juliette makes a water flask from a broken piece of pipe capped at one end.

Juliette's Wooden Box

Juliette’s belongings include an ornate antique wooden box a little larger than Lukas’s palm.

Katelyn works the counter at Central Dispatch.

Neighboring Silo Thirty-First-Level Dirt Farm

The dirt farm below the hydroponics level still has running machinery and dripping water.

Robber Cave Experiment

The account Lukas reads describes experimenters posing as camp counselors at Robber Cave.

Silo Twelve IT Head

The IT head’s status updates gave no alarm before Silo Twelve’s collapse.

Tracy's Storage Trunk

Tracy seals a trunk containing instructions, maps, handguns, clothing, camping equipment, and extra rations.

Alice researches Juliette at Jahns’s request before the trip.

Donald's Office

Donald’s office is in Rayburn, one floor above the entrance.

Dr. Henson reports that a patient has not responded to treatment and needs authorization for the deep freeze.

The farm of Mission’s family has been worked by generations of Jones boys.

Mrs. Pearson teaches Jimmy’s class rules from the Pact before a scheduled banishment.

Nursery on Twenty

The nursery on twenty enforces quiet with oiled door hinges and signs demanding silence.

The oil well’s pump is on level one-forty-two.

Robbie answers Mission from an upper way station where he says he has been left alone.

Scottie's Data Drive

Scottie’s data drive is hidden at the bottom of a box of cookies.

Thurman describes a reset as reducing the population and erasing computer data and memories before starting again.

Sophia is a former suit technician.

Thirty-Fifth-Level Room

The hidden area on level 35 cannot be reached by the stairs.

Birth Control Implants

Doc Haines suspects a bad batch of birth control implants in Silo Thirty-Two.

Merriman drinks a bright blue liquid from a clear thermos before returning to his chamber.

Bradley is a porter whom Mission meets among the applicants at IT.

Charlotte's Pistol

Charlotte carries a pistol taken from a storage bin concealed in a hip pouch.

Donald's Wedding Ring

Donald habitually twists his wedding ring with his thumb.

Eighth-Floor Dirt Farm

The remains of Holston’s parents supplied nutrients to the eighth-floor dirt farm.

Emergency Personnel

Personnel stored in the room marked Emergency Personnel include Charlotte.

Fifty-Sixth-Level Hydroponics

Farmers at level fifty-six lower power cables over the railing to draw electricity from the landing below.

Garment District

The garment district produces multicolored coveralls and supplies Jahns’s yarn.

Holston's Case File

Holston’s case file contains extensive notes on his last days as sheriff but only a short account of his offense.

Hyla is Bobby’s daughter and apprentice.

Inter-Silo Power Lines

Juliette says she has seen the incoming power lines and intends to cut off the power connection.

Mayor’s Apartment

Juliette’s own apartment is on level six.

Mining Excavators

The excavator used by Juliette advances on rusted tracks and drives a hammer bit into concrete.

Mountain Command Room

The command room has a central round table surrounded overhead by monitors.

Neighboring Silo Deputy Station

Juliette has slept in the deputy station’s holding cell during supply runs.

Paul (Jimmy's friend)

Paul is Jimmy’s best friend.

Scottie's Printout

Scottie’s printout contains the strange computer text Juliette sent to Mechanical.

Silo Collapse System

Donald describes bombs intended to bring down silos if their inhabitants defeat the other controls.

Silo Eighteen Guest Bunkroom

The children receive a small bunkroom, while Jimmy is assigned a private room down the hall.

Bernard says Silo Ten fell after a colleague’s shadow broadcast forbidden knowledge.

Solo’s machete was found beneath a recently dead man.

Surveillance Cameras

Juliette reports that she cut hidden camera feeds weeks earlier.

Tracy packs maps with the supplies for April and Remy.

Tracy stores two handguns among the supplies for April and Remy.

Victor's Message

Victor’s message anticipates that Thurman will regard his intended action as a violation of their pact.

Donald meets with Senator Thurman in Washington, DC, in 2049.

The 141st is scheduled to perform a flyover after the convention’s noon national anthem.

Airlock Canisters

The canisters fill the airlock with white fog when fired after the outer-door breach.

Donald searches the storage level for Anna’s locker.

Blasting Powder

The delegation transports heavy sacks of blasting powder toward Supply.

Darcy obtains an H&K .45 from a sealed armory bin.

Electrical trained Marck as a shadow before Juliette arrived.

Elise’s sister is dead.

Frankie's Father

Frankie’s father works in security in IT.

Holston and Allison's Lottery Ticket

Holston keeps carrying the ticket he and Allison won in the year of her death.

IT’s defenders use guns that continue firing while their levers are held.

Jimmy's Family Apartment

Jimmy lives on level eighteen.

Peter Billings works in Judicial a few floors below the upper cafeteria.

Kali is Shirly’s shadow and helps rinse the rags used to clean the generator.

Lukas's Apartment

Lukas leaves his apartment on the morning of Juliette’s cleaning.

Mechanical Bunk Room

Jahns and Marnes are staying in Mechanical’s bunkhouse.

Mid-Level Nursery

Juliette’s parents worked together in the old mid-level nursery while her father was an intern.

Apartment wings in the mids are being prepared to house detainees.

John and Tracy had their affair in a hotel room in Milan.

Mission’s aunt formerly worked as a chipper repairing and repainting rusted steel.

Monthly Town Hall

The day’s monthly town hall is the first since Juliette’s election.

Mrs. Crowe's Note for Jeffery

Mrs. Crowe writes Jeffery a note to help Mission deliver her letter to Rodny personally.

Neighboring Silo Cistern

The cistern provides Jimmy with a finite water supply after his tap runs dry.

One-Hundred-Seventeenth Level

People gathered at landing one-seventeen have seen wreckage falling past.

One-Hundred-Twenty-Sixth-Floor Dirt Farm

Knox considers the dirt farm on level 126 a strategic asset for a fallback at Supply.

Rhodes invokes government accounting to explain the Pentagon’s extremely expensive hammers.

Population Control

Population Control blamed Silo Seventeen’s collapse on a lax IT department.

Seed Solar Panels

The tower has a silvery flat surface jutting upward, partly covered with vines.

Silo One Sensor Tower

A small concrete tower with antennae stands behind the Georgia stage as the only visible sign of the underground containment facility.

unidentified character appears among the human-behavior accounts that Donald has encouraged Lukas to treat as more than fiction.

People travel from both the Top and the Deep to attend the Mids priest’s warnings about the digging.

Juliette used the tool lock-up to teach herself motor rewiring during her initiation.

Tracy's Trunk Key

Tracy intends April and Remy to awaken with a key around their necks.

The up top has no third shift and little second-shift activity beyond dinner service.

The upper way station is on level ten.

the office at the address in the suicide alert

Scottie’s office contains a cot that appears recently used.

Dmitry is a programmer who deactivates the machines in the founders’ blood.

Marcus Dent says he shadowed Deputy Willis before transferring to IT Security a year earlier.

Terry Harlson introduces himself as a member of the Planning Committee.

Coastal Village

The settlement near the coast is a village led by Mayor Juliette.

Gina worked in Supply.

Jason is the shadow of Silo Twelve’s IT head.

Barbara (John’s wife)

Barbara does not know why John has stopped beside the interstate.

The upper gardens are hydroponic farms.

Drexel is an apothecarist who operates in the mids.

Emily is John and Barbara’s nine-year-old daughter.

Igor begins the founders’ habit of saying “Carry on.”

According to Thurman, James Hannigan was a corporal and his squad’s medic.

Nanobiotic Chamber

The nanobiotic chamber is a large white capsule with small glass windows, external hoses and wires.

Night-Shift Doctor

The night-shift doctor tells Troy he cannot remain among the cryopods because he will freeze.

Samson is a young porter who trained under Gloria.

Anatoly is a heavyset, bearded physicist.

Caroline is Erskine’s only child.

Deputy Hines recognizes Jimmy as Russ’s son over the radio.

Jimmy's Calendar

Jimmy’s calendar consists of marks scratched in the black paint of the server each evening.

Neighboring Silo General Store

The general store is on level nineteen, directly below Jimmy’s former home.

Dr. Nichols’s son was to be named Nicholas after his paternal great-grandfather.

One-Hundred-Sixteenth Level

Level one-sixteen is mostly residential, with a few illicit businesses operating from apartments.

Randall works in the psych office across the hall from Troy.

Silo One Level Fifty-Seven

Level fifty-seven contains a storeroom reached by lift.

South Carolina Facility

A concrete ramp inside a smaller tent provides access to the South Carolina facility.

Temple on Ninety-Nine

The temple on ninety-nine occupies space among former hydroponic farms and worker flats that once served the Deep.

Victor's Research Files

Victor’s research reports cover primate behavior and twentieth- and twenty-first-century wars.

Water Medication

Thurman says the memory-suppressing medication is in the water.

Rhodes says Thurman’s anti-cryo bill made commercial freezing of wealthy clients illegal.

Architects of Death

Architects of Death is a museum exhibit of blueprints and schematics connected to mass killing.

Athena is one of Helen and Rick Brewer’s children.

Biggers heads Silo Thirty-Two.

Carlos’s lakeside property has a boathouse and a small fishing boat.

Carter (porter)

Carter is a strong porter in his early thirties.

The Corner Diner is where Donald and Helen had their first date.

Decontamination Tub

Juliette welded the large metal tub used to protect her during the airlock burn.

Deputy Hoyle helps police the Town Hall meeting by ordering residents to sit down and be quiet.

Donald's Locker

Donald’s locker opens with a button rather than a latch.

Elise uses a bow that formerly belonged to Juliette.

Gene Sample worked in Sanitation.

George (bazaar worker)

One database match for George is a thirty-two-year-old bazaar worker whose occupation is recorded as “other.”

Hank (Silo Seventeen)

The intruder addressed as Hank has a long beard and yellowed teeth.

Holocaust Museum

Charlotte brought her reluctant brother to the Holocaust Museum after their Air and Space Museum visit.

Holston and Allison's Apartment

Holston and Allison live in a condo that has been subdivided only twice over the decades.

Jackson is a dog living among Supply’s stacks who seeks attention from Knox.

John's Explorer

John’s Explorer carries enough camping gear for a month.

Jomeson is an old pump repairman.

Lesley is Erik’s wife.

Margaret is a nurse who receives Jahns and Marnes at the nursery.

Margaret (congressional secretary)

Margaret is Donald’s secretary.

Michael (medical assistant)

Michael is a medical assistant who helped remove the wounded man from the cryopod.

Mountain Man Attacker

A naked, heavily haired man enters the room on all fours and attacks April and Remy while repeating “Feef-deen.”

Neighboring Silo Generator Room

The old generator room is where Jimmy and the children wait for the approaching digger.

Parker Family Candle

The Parker family candle is many generations old and less than half consumed.

Pumps in the deep pits run constantly to prevent water from filling half the silo.

An unidentified voice answers Walker’s attempt to contact Juliette.

Raina is Dawson’s wife.

Raylee is a second-shift electrician who is nine months pregnant.

The media called the attack at Safed an outbreak.

Sarah Jenkins smiles back at Jimmy during class.

A moving platform in the bunker’s stairwell is put into operation.

Silo Twelve Deputy

A man identified tentatively as a deputy radios for help as a mob breaks down his door.

Jimmy’s poem imagines ghosts watching him and corpses laughing as he walks alone.

Thirty-First-Level Dirt Farm

The farms on level thirty-one attract crowds seeking food.

The bag contains a quarter that reminds Donald of the lost civilization.

Upper Gardens Guest Rooms

The gardens’ guest rooms are a level below the dining area.

Voice on Line One

The caller on line 1 asks whether Jerry or Russ is answering.

Winters is a dark man with a white beard who works in maintenance and is skilled with pumps.

the Senator’s office

Thurman’s waiting-room bookshelves have been converted into trophy cabinets.

Allison's Recovery Program

Allison has devised a process for recovering deleted and overwritten information.

Amanda (dispatcher)

Amanda works at Dispatch and handles the hot filing drawers with her hand wrapped in a kerchief.

Access to the armory level requires a security override.

Barbara sat at a classroom desk beside the door.

The theater has sloping rows of benches and seats overlooking a stage.

Vials of blue powder are taped to water tins in Tracy’s trunk.

Bobbie Milner is a shadow no older than sixteen who waits beside Lukas with the defenders.

Carl promises to bring a file after another speaker warns that a cleaning is scheduled for the next morning.

Carlos is John’s friend from military service and owns a lakeside cabin.

Some villagers want to scout the Carolinas for a new settlement.

Caryl has transferred from third shift.

Charlotte's Silo Schematic

Charlotte draws a silo schematic from her brother’s routine and the personnel directory.

The history Lukas reads describes the Civil War as a four-year conflict that consumed thirty-four states.

Clarke is Emma’s husband.

Juliette, Solo, and Charlotte fish from the beach using lines cast beyond the breakers.

Conner (mechanic)

A mechanic says Conner has been digging the tunnel.

Connor (cafeteria worker)

Connor is one of the cafeteria workers restraining Allison.

Connor (porter)

Connor is a teenage porter with a strong back and steady stride.

Coroner's Office

The coroner’s office is on level thirty-two, below the dirt farm.

Debra's Scouting Party

Debra’s scouting party has been away for a week when Elise meets April and Remy.

Deputy Roberts is described over the radio as searching for clues with her kit.

De’Angelo’s

De’Angelo’s is the restaurant where Donald and Anna finish their design meeting without Mick.

Dog Meat Seller

A dog-meat seller claims he paid for Elise’s puppy and offers to accept her book in exchange for it.

Donald's Holding Room

Donald’s prison room has a secure door and no escape route above the ceiling panels.

Donald's Pistol

Donald brings a pistol to Thurman’s pod and holds him at gunpoint.

Drexel's Apothecary

Drexel’s apothecary has a waiting-room bench occupied by coughing and sniffling customers.

Emma picks up chalk and crayons while children play in the cafeteria.

Thurman’s new energy bill centers on the Containment and Disposal Facility.

Farmers' Generator

Farmers try to lower a heavy generator between landings using a rope.

Fifty-Eighth Level

Drexel’s apothecary is on level fifty-eight.

The survivors spend the night in a wooded camp with tents and fires.

George (Mechanical worker)

One current database match for George is an older Mechanical worker.

Gloria is a neighbor of Marnes whom Juliette recognizes from school recess in the cafeteria.

Gloria (porter)

Gloria, the porter under whom Samson trained, is dead.

Hackett is a dispatcher whom Mission remembers as treating young shadows respectfully.

Haney is the butcher’s boy at the village larder.

Hank's Companion

A woman in the hallway calls for Hank before Jimmy shoots her.

Juliette recovers in the infirmary on level thirty-three.

Igor uses a silver watch to count down the time before the bunker must close.

Jahns's Knitting

Jahns keeps paired wooden knitting needles in a leather pouch.

Jimmy's Fishing Pole

Jimmy’s fishing rig uses a ping-pong ball as a bobber.

Juliette's Mechanical Room

Juliette’s old room contains a small display terminal and keyboard on a wall rack.

Kramerbooks has a busy cafe and a small bookshop area with old books.

Laminated Route Map

A laminated map in a storeroom crate depicts all fifty silos.

John takes a gasoline-powered Lexus 500 from the eastbound lanes.

Lottery Committee

The lottery committee requests an official population count.

Marcha is a dark-haired, bright-eyed teenage girl apprenticing in IT.

Marnes's Apartment

Marnes’s apartment is four flights below the sheriff’s office, on the level beneath Juliette’s apartment.

The Medical Board requires a simpler, more open layout without lifts.

Mountain Woman Attacker

A woman on all fours prepares to attack April and Remy after the first attacker is shot.

Mr. Bunny is the toy John tells Emily to hold against her chest.

Mrs. Crowe's Apartment

Mrs. Crowe’s classroom adjoins the only apartment on her level.

Murphy is a sheriff candidate whom Bernard considers too old for the job.

Neighboring Silo Coroner's Office

The coroner’s office lies below the farms, past the pump rooms.

Neighboring Silo Pump Facility

The pump facility beside the generator room shelters survivors in the light of torches and flashlights.

Neighboring Silo Sump Room

The sump room contains a central pit marked with water-depth numbers.

Neighboring Silo Thirteenth-Level Nursery

The nursery on level thirteen is dark, with stagnant air smelling faintly of decay.

Patrice gathers and eats fresh snow just before the bunker doors close.

John has two sets of tickets, offering journeys to Atlanta and Colorado Springs.

The porter ledger is a large paper volume kept locked up in the main way station.

Rebecca is Peter’s mother and works in the nursery.

Rhoda was an experienced delivery nurse whom Juliette initially blamed for her brother’s death.

Sasha was the only other woman in Charlotte’s boot camp.

Scottie’s final wire asks Juliette for help getting a transfer to Mechanical.

Juliette says Shaft Six lies almost directly beneath the excavation.

Sharon reports fourteen injured men in the infirmary and eight more restrained after the initial announcement.

Sherman invokes the Donner Party as a warning about what starvation might lead the survivors to consider.

Merriman leaves folders of notes for Troy.

Silo Forty Voice

The man on line 40 asks Jimmy about casualties.

Silo One Exercise Room

The exercise room is on level twelve.

Silo One Operating Room

The operating room is rarely used.

Silo One Personnel Directory

The personnel directory lists rank, shift assignment, occupation, living level, and work level.

Silo Thirty-Two

Silo Thirty-Two’s population exceeds nine thousand and its median age has fallen into the low twenties.

Silo Twelve Airlock

Silo Twelve’s inner airlock door opens during the attempted mass escape.

Soil Sampling Tool

Juliette built the soil-sampling tool’s large T-shaped grip while wearing bulky suit gloves to ensure it could be handled outside.

Solo's Can Opener

Solo found a battered electric can opener in an empty apartment after following Shadow there.

South Carolina Conveyor Lift

A conveyor lift sends loaded containers down the facility’s central shaft and returns empty trays to the top.

South Carolina Third-Level Apartment

The apartment where Mick and Donald speak has a made bed and stacks of linen.

Terry is a burly security worker from IT who regularly covers for Marnes and Holston during investigations.

Thurman's Dog Tags

Thurman’s dog tags arrive in a plastic bag marked Shift.

Thurman's Pocketknife

The pocketknife in the bag has a handle that looks like ivory.

Tracy’s father has intermittent senility and knows troubling classified details about her work.

University of Georgia

Georgia is the college Donald and Mick attended.

Upper Grade School

The grade school serving the upper third of the silo is directly above the nursery.

Solo shows Juliette a map of land and water to explain the size of the world outside the silos.

The accounting offices manage spares and supplies.

Air and Space Museum

A solar-system scale model outside the Air and Space Museum places the inner planets a few strides apart and Pluto blocks away.

Alice (literary reference)

Tracy’s “Drink me” note makes April compare herself to Alice falling into a strange world.

Amanda Kelly is being filmed with a reporter outside her office next to Donald’s.

Anna’s radio is connected to her computer through a black box.

Atlanta International

Numerous departing jets from Atlanta International are visible overhead at the construction site.

The Crow describes Atlantis in an Old Time story as a lost city of magic beyond the hills.

The Architects of Death exhibit includes a clearly labeled layout of Auschwitz and its gas chambers.

Boston is the destination for Donald’s next meeting with the Senator.

CAD-FAC Container Field

The staging area near the main parking lot contains thousands of shipping containers of building supplies.

CAD-FAC Trailer Village

Most trailers at the construction site house workers, while a few serve as offices.

April considers the CIA one possible agency associated with Tracy but cannot distinguish among the agencies.

CNN’s broadcast swings aside as disaster erupts at the televised event.

Capitol Building

Donald goes in and out of the Capitol building about a dozen times a week.

Newly elected representatives, including Donald, arrive at Capitol Hill hoping to bring change.

Carol (radio reference)

An unidentified speaker mentions Carol in a radio conversation Charlotte overhears.

Cassie is a name on a sealed pod in the deep freeze.

The history Lukas reads portrays Castro as a liberator who subsequently enslaved people under a worse system.

Catherine is a name on a sealed pod in the deep freeze.

Centers for Disease Control and Prevention

A Georgia congressman says the CDC website has a response and readiness manual for a zombie invasion.

Chemical supplies fluids and powders that receive special attention in porter monitoring.

Coastal Village Larder

Elise, April, and Remy deliver deer meat to the village larder.

Coastal Village Market

Elise skirts the market and square to avoid drawing attention to the newcomers.

Colorado Flight School

Donald toured his sister’s training facility after her graduation from flight school in Colorado.

Colorado Springs

Colorado Springs is the destination on John’s alternative plane tickets.

The shift list identifies Cooper as on duty when Silo Seventeen fell.

The history Lukas reads portrays Cromwell as a liberator who subsequently enslaved people under a worse system.

The crushing room grinds mining tailings into powder and vents them to the exhaust manifold.

According to Donald, the DNC has not yet announced the National Convention’s location.

Danielle is Helen’s sister.

Elise thinks the group April and Remy encountered was Debra’s scouting party.

A colleague at the deep nursery sends Dr. Nichols occasional news of Juliette.

Democratic Party

Thurman addresses fellow Democrats at the convention.

Deputy Willis supervised Marcus Dent as a shadow before Marcus transferred to IT Security.

Dmitry's Test Nanos

Dmitry retains canisters of test nanos he built and can program.

Doc Haines suspects faulty birth control implants are causing Silo Thirty-Two’s population growth.

Juliette initially asks for Doc Hicks, then remembers she needs a doctor near the up top.

Gloria goes to fetch Doctor O’Neil to attend Marnes.

Donald and Helen's House

Donald finds Helen’s Jeep occupying the middle of the driveway when he returns home.

Donna Parkins was put to cleaning twelve years before Holston’s confinement.

Sherman describes the Donner Party as settlers trapped in the mountains two centuries earlier.

Dr. Martin is the psychiatrist who treats Donald’s sister.

The memo’s author volunteers to work E-shift and pull the lever.

Eighty-Second Landing

The eighty-second landing is favored by people jumping to their deaths because of its clear drop to ninety-nine.

Elise’s knife was a gift from Solo.

Eren’s desk is surrounded by files and piled with paperwork.

April considers the FBI one possible agency associated with Tracy but cannot distinguish among the agencies.

Farm Feeding Hall

Mission’s father proposes meeting Mission in the feeding hall in half an hour.

The pump room is down the hall from the family’s growing station.

The fifty-sixth landing is visible from the fiftieth landing.

Someone gives a speech on Florida’s stage during convention preparations.

Frankie (Mechanical security)

Frankie is in the infirmary after being overrun by the mob at the gates.

Gabriella is a name on a sealed pod in the deep freeze.

George (infant)

One database match for George is an infant less than a year old.

George (older record A)

One deceased George in the down-deep records died in his fifties of natural causes.

George (older record B)

Another deceased George in the down-deep records died in his sixties of natural causes.

George (porter's shadow)

One young database match for George is shadowing a porter.

Georgia Delegation

Work crews operate from the Georgia tents during preparations.

Georgia State Tent

Thurman asks Donald to visit him at the state tent once Helen arrives.

According to Pieter, Georgie nearly provoked a fight with people questioning the activity near the lower market.

Jimmy’s glass figurine soldiers were a thirteenth-birthday gift from his uncle.

Gloria's Husband

Gloria’s husband helps Juliette support Marnes and lower him onto the bed.

Gretchen is a name on a sealed pod in the deep freeze.

Gwynn is a name on a sealed pod in the deep freeze.

Halley is a name on a sealed pod in the deep freeze.

Heather (first pod)

Heather is a name on a sealed pod in the deep freeze.

Heather (second pod)

A second pod in the deep freeze bears the name Heather.

Helen (first pod)

Helen is one of two occupants with that name in the deep freeze.

Helen (second pod)

Helen is one of two occupants with that name in the deep freeze.

According to Courtnee, Heline said the generator exhaust would be rerouted to IT.

Juliette expects Hendricks to complain if the mechanics check out a rebuilt spare pump instead of repairing the failed one.

Many blueprints displayed in Architects of Death bear Himmler’s signature.

A Holocaust Museum exhibit addresses efforts to deny the Holocaust and presents blueprints as evidence.

House of Representatives

The House of Representatives has offices in Rayburn.

Mayor Humphries sought IT approval for nominations before Jahns did.

The ID department supplies photographs from personnel ID numbers.

IT Server Level

The server landing is on the thirty-third level.

John’s family is beside Interstate 80 when the catastrophe begins.

John’s family is in Iowa instead of joining the selected survivors outside Atlanta.

Charlotte’s military service in Iraq involved remaining confined to base amid a dangerous desert environment.

Father Wendel locates and reads Isaiah in the scattered scripture pages.

An imam in Istanbul was the intended recipient of a ricin-laced letter John prepared.

Jahns's Case File

The file on Jahns’s death contains testimony and investigative notes.

Mayor Jeffers sought IT approval for nominations before Mayor Humphries did.

Jerry is the boss of Jimmy’s father, Russ.

Jimmy's Calculator

The calculator Jimmy’s father built remains in Jimmy’s abandoned backpack.

Jocelyn helps Carter and Lyn spread rescued files over dormitory bed springs.

John burns the tickets and gathers camping equipment in his garage.

John packed a small single sideband radio that Emily recovers after the crash.

John uses his watch to track the appointed time of the catastrophe.

According to Raph, Jonny objected that Gina remembered the inventory estimates that fit her theory and forgot those that did not.

Judge's Chambers

The judge’s chambers contain an old leather chair repaired with tape.

Juliette's Tree House

Juliette’s home is a small shelter fastened high in trees near the beach with spikes and ropes.

Karl is among the workers working on the generator’s exhaust feed.

Thurman places the incident in which Hannigan was wounded outside Kashmar near the end of the war.

Kipper’s has a bar in the upper part of the silo.

The history Lukas reads portrays Lenin as a liberator who subsequently enslaved people under a worse system.

Lily is an older porter working in the flooded, smoke-filled Dispatch corridors.

Lincoln Memorial

Donald remembers walking around the Lincoln Memorial with Helen shortly before the cherry blossoms.

A larger farm occupies part of the one-thirties above the lower water treatment plant.

Jahns and Marnes pass the lower gardens on their way to Mechanical.

Pieter reports that suspicious people near the lower market challenged the passing workers.

Lower Water Treatment Plant

The lower water treatment plant lies below the larger farm in the one-thirties.

Marnes’s suicide note reads “It should have been me.”

Marnes's Pistol

Marnes inspects his gun before the trip down the silo.

Mars is one of Helen and Rick Brewer’s children.

April remembers living in Maryland before the journey to Colorado.

Robbie says the mayor’s office has the only working terminal available to his office.

McLain's Office

McLain’s office opens onto workshops where weapons are being made.

McNeil is an elderly woman in Supply whom Jahns thinks might also recognize how the silo has changed.

Mechanical Classroom

Juliette sends Raina to the classroom to collect the children for evacuation.

Megan is among the mechanics Juliette considers recruiting to confront the silo’s leadership.

Melanie is Marcus Dent’s girlfriend and works in IT.

Milgram appears among the human-behavior accounts that Donald has encouraged Lukas to treat as more than fiction.

Mining Storehouse

The mining storehouse contains a foreman’s office with explosives and transmitters in a locked desk drawer.

Mission and Allie's Apartment

Mission and Allie keep candles for power interruptions caused by generator changes and repairs.

Mission's Grandfather

Mission’s grandfather died in the uprising of ’78 before Mission knew him.

Mission's Stepmother

Mission believes his stepmother would be hurt if he failed to visit her.

Mountain Apartment Wing

The shelter’s apartment wing contains two thousand rooms added to the original complex.

Mountain Countdown Clock

A clock in the command room counts down to the expected catastrophe.

Mountain Infirmary

The infirmary holds fourteen men after unrest over the initial announcement.

Mountain Mess Hall

Residents meet and eat in the mess hall after being confined in the bunker.

Mountain Woman Survivor

A second woman inspects the two dead attackers and the living couple, repeats “Feef-deen,” and leaves without attacking.

Thurman says NASA is requesting substantial funding for a round trip to Mars.

April considers the NSA one possible agency associated with Tracy but cannot distinguish among the agencies.

Nanobiotech Wing

The nanobiotech wing is guarded by heavy doors and men blocking every corridor.

The history Lukas reads portrays Napoleon as a liberator who subsequently enslaved people under a worse system.

Natasha refuses the proposed killings and prefers a year with her family.

Neighboring Silo Fifteenth Landing

Juliette uses the fifteenth landing as a sleeping place rather than entering the dark rooms beyond its doors.

Neighboring Silo Fifty-Sixth-Level Hydroponics

The hydroponics on level fifty-six hold enough food and water for the group’s remaining journey.

Neighboring Silo Forty-Second Level

Solo uses the landing at forty-two as a place to dump bags of empty cans from above.

Neighboring Silo Garment District

Jimmy expects to find overalls in the garment district.

Neighboring Silo Level Fifty-One

Jimmy remembers hiding a rifle on level fifty-one, wrapped in a quilt inside an old trunk.

Neighboring Silo Level Forty

Level forty divides its space equally between housing and other uses, with a quarter of the level devoted to light agriculture and the remainder to commercial activity.

Neighboring Silo Level One-Eighteen

Jimmy remembers that the lower rifle stash is on level one-eighteen rather than one-nineteen.

Neighboring Silo Level One-Twenty-Two

Jimmy encounters Terry at the landing on level one-twenty-two.

Neighboring Silo Mines

Survivors are trying to stop floodwater from spreading out of the mines and inundating Mechanical.

Neighboring Silo Ninth Level

Solo’s final paper parachute narrowly misses the landing on level nine.

Neighboring Silo One-Hundred-Thirty-First Level

Jimmy rests against the closed doors of level one-thirty-one while Shadow eats his fish.

Neighboring Silo One-Hundred-Twenty-Eighth Level

Solo stops in an apartment on level one-twenty-eight to urinate.

Neighboring Silo Sanitation

Jimmy passes sanitation on level twenty-six on his way to the general store.

Neighboring Silo Seventy-Five Deputy Station

The deputy station on level seventy-five is where Tom Higgins answers Charlotte’s call.

Neighboring Silo Third Level

Solo uses the third-level railing as the launch point for his paper parachute.

Neighboring Silo Thirty-Third Level

Solo briefly mistakes the thirty-third landing for his destination while fleeing, then realizes he must descend one more.

Neighboring Silo Water Stock

Solo has located the water stock on level one-twelve.

Neighboring Silo Water Treatment

The pumping system sends floodwater twenty levels upward into empty water-treatment tanks.

Nicholas (Peter's grandfather)

Peter Nichols planned to name his son Nicholas after his own paternal grandfather.

Ninetieth-Floor Farm

The ninetieth-floor farm keeps pigs and other animals whose waste supplies fertilizer.

North Carolina Delegation

Bluegrass music comes from the direction of North Carolina’s delegation.

Oklahoma is supplying shipments for the construction project.

One-Hundred-Seventh Level

Joel and Lyn let Mission out of the bag in a bathroom on level one-zero-seven above Supply.

John invokes Pavlov while reflecting on his reflexive response to Tracy’s ringtone.

Percy restrains Allison’s kicking feet in the cafeteria.

Peter Nichols's Makeshift Clinic

Juliette’s father has made a clinic in a cleared-out, rusted storeroom.

Lukas reports that a priest in the Mids holds two Sundays weekly to warn that digging could fill the silo with deadly dust.

Professor Karpov

Tracy says Professor Karpov believes her and John about the coming catastrophe.

Puppy (constellation)

Elise names a group of stars Puppy, with Juliette’s agreement.

RYT’s Dwayne Medical Center has security that Donald finds more intensive than the government buildings he has visited.

Rachele works first shift and knows Juliette well.

Rayburn houses offices for the House of Representatives.

Records logs major events in every silo and enters them into the servers.

Pieter’s refinery crew replaces its usual black overalls with blue ones to attract less attention.

Republican Party

Thurman jokingly describes Republicans as enemies while introducing a quotation attributed to Reagan.

Rick argues that the cleaner would already have run out of air.

Rick the Plumber

Rick the plumber is Rickson’s father, according to Rickson.

Ricks is among the mechanics Juliette considers recruiting to confront the silo’s leadership.

Rickson's Brother

Rickson reportedly believes he had a brother, without confirmation from his father.

The history Lukas reads identifies Robber Cave as the site of an experiment involving two groups of boys.

Thurman credits Ronald Reagan with saying freedom must be fought for and peace earned.

Lukas wants to ask Donald about Rousseau during their discussion of the Legacy.

Roy is the boy advertising dog meat whom the stallholder calls to restrain Elise.

Donald remembers Safed as an Israeli town near Nazareth and Syria.

Sandra (Helen's mother)

Sandra is Helen’s mother.

Sandra (founder)

Sandra asks what the five-hundred-year interval means.

Raph identifies Gene Sample as someone from Sanitation.

Second Iranian War

Charlotte was stationed in Iraq during the Second Iranian War.

Seventh-Level Bakery

The bakery is on level seven.

Solo points out silo eight on the map.

Anna says Thurman was awakened when contact with Silo Forty-Two was lost.

Solo describes using a wired apparatus held at his ears to speak with another silo.

Lukas imagines miners from silo eighteen encountering miners from silo nineteen if they dig sideways.

Silo One Control Room

The control room down the hall receives the order to fire the airlock canisters.

Silo One Engineering

Engineering blamed Silo Seventeen’s collapse on programming.

Silo One Fifties

The levels in the fifties hold emergency supplies.

Silo One Level Forty-Four

Level forty-four is a general living level.

Silo One Level Forty-Two

The hallway on level forty-two is dim and empty when Eren calls for help.

Silo One Level Sixty-Eight

The operating room is on level sixty-eight.

Silo One Level Thirty-Seven

Level thirty-seven contains Troy’s apartment.

Silo One Lounge

An older man tells Troy that the lounge offers a view farther into the distance.

Silo One Mechanical Levels

The mechanical spaces and general storerooms lie above the two reactor levels.

Silo One Psych Office

The psych office is across the hall from Troy’s office.

Silo One Security Level

The directory places a security officer’s workplace on level twelve.

Silo Seventeen Level Thirty-Two Water Plant

Jimmy passes the water plant on level thirty-two as he climbs toward the general store.

Silo Thirty-Seven

People escaped from Silo 37 a few years before Elise meets April and Remy.

Silo Twelve Cafeteria

A single door separates Silo Twelve’s cafeteria from its airlock.

Silo Twelve Level Seventy-Two

Silo Twelve’s level seventy-two camera shows the sheriff slumped at a desk.

Silo Twelve Server Room

Calls to Silo Twelve’s server room go unanswered during the collapse.

Silo Twelve Sheriff

Silo Twelve’s sheriff is dead at a desk on level seventy-two, with a gun in his hand and blood around the keyboard.

Silo Twelve Staircase

Silo Twelve’s spiral staircase is packed with frightened people pushing and shoving.

Silo Twelve Upper Security Office

A mob breaks through the door of Silo Twelve’s upper security office.

Solo's Canvas Bag

Solo takes his canvas bag on a trip to collect food.

South Carolina Delegation

A blue flag with a white tree and crescent moon flies over the South Carolina stage.

Storage Facility

The storage facility beyond the bunk room contains racks of guns and many boxes of ammunition.

Supply Lightbulb Storehouse

According to Raph, the lightbulb storehouse is about half empty.

Susan has a son who is playing with the other children.

The unwounded bodies on the interstate remind John of deaths he saw in Syria.

Temple on Twenty-Eight

The temple on twenty-eight established the satellite congregation on ninety-nine.

Thirty-Eighth Level

Level thirty-eight houses offices, shops, a plastics factory, and a small water treatment plant.

Thirty-Eighth-Level Pump Control Room

The pump control room contains a computer cabinet that Lukas maintains on Tuesdays.

The meeting room’s aisles divide its benches into three sections corresponding to the silo’s regions.

Tracy remembers her mother as someone who might have been saved if cancer-treating machines had existed sooner.

Tracy's Pocketknife

Tracy leaves her pocketknife with the couple’s supplies.

Troy's Apartment

Troy’s apartment is on level thirty-seven.

Twenty-Fourth Level

A gap beyond the twenty-fourth level contains freshly painted graffiti.

Upper Water Treatment Plant

The upper water treatment plant is on level thirty-two.

Uprising of ’78

Mission’s grandfather was killed in the uprising of ’78.

Walter Reed’s cafeteria was the setting for a meeting at which Victor discussed the psychological danger of man-made epidemics with Erskine and Thurman.

Donald has visited the White House twice.

Judge Wilson supervises Peter Billings as a shadow.

the congressional representatives

New representatives from Georgia are summoned to individual meetings with Senator Thurman.

the plant that processes the oil

A plant a few floors below the oil pump processes the oil to make it ready to burn.