The Wider World

Everything beyond a single train: the track network, the other trains, the crossing system, station towns, grounders, bandits, and the wilds. The bible has been Meridian-centric by necessity; this file gives the world the train runs through enough solidity that later books (which the series plan says will “expand to other trains, other cities”) have something to stand on.

Scope: the world outside the carriages. For life aboard, culture. For the sealed truth about what the network is and why it grows, bible-secrets. Surface mystery and reveal-timing: reveals.

The track network

• The tracks are vast, finite, and of unknown origin — built (or grown) by no one in living memory (rules, timeline). They span continents and connect the whole train-civilisation into one implied system.
• They form loops, not lines. Each train runs a fixed circuit; The Meridian’s takes ≈14 months. A loop is the fundamental unit of travel, time, and life (culture).
• The tracks are not static. They grow — the slow build (see below, and reveals M4). New junctions appear, curves shift, spurs extend, a few feet per generation. This is the central revelation of Book Three and the deepest visible fact about the world: the infrastructure is still being assembled.
• The engine end is unknowable — not just restricted but structurally hidden (rules, the compartmentalised labour structure). “Forward” is power, warmth, and the thing no one may understand (motifs).
• The network converges — the orbit. Book Seven’s revelation (reveals, book-seven/overview): the loops are not scattered across a continent. Laid over one another and scaled, every circuit on every train is a slightly concave arc — the whole system orbits a single point in the northern interior that has no station, touches no track, and is on no chart (the kept blank every route-chart is copied forward to leave empty). The slow build has a centre; the growth circles inward toward one absence. ⚠️ “Orbit, not destination”: the shape is canon; what is at the centre — and whether the loops are falling toward it or merely held by it — is sealed (M1/M5; bible-secrets). The nearest the rail ever comes to it is the top of the Meridian’s loop (Coldmere, below).

The trains

There are many trains, each effectively a mobile city-state with its own culture, governance, and economy (UNIVERSE). Three are detailed; the rest are deliberate open space for future books.

The Meridian

The primary train; northern continental loop. Pragmatic, orderly, runs on paperwork and quiet authority under a Conductor who rules through stillness. Matte brown and cream, faded to a working dignity. The world of Books One and Three. Full detail in locations.

The Calloway

The eastern-circuit train; setting of Book Two. Performative where The Meridian is reticent — status displayed not concealed, carriage-classes marked with coloured banners, music in the corridors, a Conductor (Sable) who holds court rather than issues orders. Deep red forward carriages, unembarrassed gold further back. Not better or worse — a different answer to the same problem of keeping thousands alive on a moving city. Full detail in locations.

The Vantage

The timetable answer to order; setting of Book Four (The Still Train). Where The Meridian keeps order through paperwork and quiet authority, and The Calloway through performance, The Vantage keeps it through the schedule. On The Vantage, the timetable is the constitution: rank, ration, seat, and say are all pegged to where the train is on its loop and what hour the schedule says it is. It is famous across the network for running to the minute, and its Conductor’s authority is the schedule’s authority.

• Civic personality: precise, proud, and brittle. Ordered by punctuality rather than records (Meridian) or display (Calloway) — its organising fact is time and motion, not the archive. A fairness machine that works beautifully while the train runs and confers no fairness at all the moment it stops.
• Route: an interior continental loop that meets The Meridian’s circuit at a connecting spur / junction — close enough that The Meridian can detach a supply carriage and run relief down the spur without a full crossing event. (Treat the spur as ordinary, ancient infrastructure; do not invoke the slow build — Book Four predates that reveal. See reveals.)
• Conductor: Verrith (see characters) — rules by exactness; when the train stops dead, maintains every form of the schedule (the bells, the ration timetable) as denial and, just possibly, as the only thing holding the train together. Another lonely fragment-holder, not a cabalist.
• Relationship to the Arrangement: a host gone quiet. The deep, sealed idea Book Four leans on (bible-secrets): the Arrangement works through routine and motion, so a train three weeks stopped is a train where its grip has loosened — where a leak can suddenly think and remember. The still train is the rare place the watcher sleeps. (Oblique only; never stated on the page.)
• Crossings/contact: meets The Meridian at the spur; the debt between the two Conductors (unnamed, of the mercy-conspiracy kind) is what brings Elliot aboard.

The six answers. The trains now span six answers to “how do you keep thousands alive on a moving city”: bureaucracy (Meridian), performance (Calloway), the timetable (Vantage), faith (Pilgrim — Book Eight), war/control (Vigil — Book Five), consensus (Vesper — Book Six). New trains should find a seventh, not repeat these.

The other trains (open canvas)

The world implies a fleet of trains across multiple continents, each holding a fragment of the larger picture (B3’s “other Conductors know fragments”). Undeveloped on purpose. When inventing one, give it:

• a distinct civic personality (the Meridian/Calloway contrast is the template — pick a different “answer” to order: e.g. egalitarian, theocratic, militarised, decaying, nomadic-within-the-loop);
• a route/continent and rough loop length;
• a relationship to its Conductor and to the Arrangement;
• one or two crossing-points where its loop meets others. Log durable inventions back here and in glossary.

The Pilgrim

The faith answer to order; setting of Book Eight (The Pilgrim’s Blasphemy). Where The Meridian keeps the Passage at a reticent distance and nobody quite discusses it, The Pilgrim venerates it. The memory-wipe is not an awkward blank to be managed but the Mercy — the central sacrament of the faith, the holy emptying by which a soul is freed of the weight it carried and delivered clean into a new life. Arrivals are not processed; they are received: named off the Roll of the Delivered, blessed, given a lamp and a vocation, welcomed by a whole congregation as souls newly delivered. Its organising fact is devotion — and the deepest thing about it is what its devotion forbids: to ask why the Mercy happens, what is taken or by whom, is not banned by any office; it is simply unthinkable, the way interrogating a kindness is unthinkable. The unasked question is the train’s deepest creed.

• Civic personality: reverent, ceremonial, ordered by faith rather than paperwork (Meridian), performance (Calloway), the schedule (Vantage), force (Vigil), or the count (Vesper). Inquiry into the Passage is suppressed not by bureaucracy but by faith — the wipe is held a gift, and to suggest it could fail or be withheld is close to heresy because it suggests the gift could have been otherwise.
• Look/texture: lamplit and kneeling. Every soul keeps a lamp (given at delivery, let down to nothing at death); pale worn vestments; incense; long nave-carriages; bells that call to prayer. The dead’s lamps wait dark on a high rear shelf. Differentiate sharply from Calloway red-and-gold performance, Vesper boards, Vigil armour: the Pilgrim kneels. The faith-train’s bureaucracy is liturgical — paperwork is sacrament (the Roll is a holy book; recording an arrival is a rite; the drawing of a line for the dead is the clerk’s quiet sacrament).
• Governance / offices: the Conductor rules as much priest as administrator, by religious investiture (examined, fasted, found sound, anointed with oil and the bell) — which makes succession more stable and more absolute than the Meridian’s opaque transitions, and a Conductor who never listens for a step behind him. Under him: Confessors (orthodoxy, judgement) and Acclamants (veneration), with a tier of ceremonial clerks (the Office of the Delivered) beneath. A soul’s anomaly is resolved by the Conductor’s ruling, received not as a verdict but as a disclosure of the Mercy’s will.
• The Fore: the forward engine is sacred ground — the holiest place on the train, nearest the warmth, approached only to the warm forward bulkhead of the sanctuary and never past it. Its unknowability is sacralised, not investigated: the perfect M5 seal, devotion standing exactly where the Meridian’s compartmentalised ignorance stands, but on its knees. (Never decode the Fore as harvest on the page.)
• Route: a long southern circuit (shares the large south with the Vesper — different arcs; placement stays loose). Meets other loops rarely, and treats a crossing as a solemn, near-sacramental event rather than a market — the gangways consecrated, a fast kept, a procession forward to witness the holy parallel, the two Conductors speaking briefly across the gap on closed matters of the offices.
• Conductor: Anselm (Book Eight; see characters) — the priest-Conductor, the most pious fragment-holder in the series and a third Conductor-type: not a shielder (Sable, the Meridian Conductor, Verrith, Quill) and not a hunter (Strake) but a sacraliser — a man who has wrapped the immune-function in genuine faith, so that doing the Arrangement’s work feels to him like grace. His flinch from the name (M2) is reforged as reverence; his whole holiness is the most comfortable refusal a man can make (the turning-from-the-question), experienced never as avoidance but as rest.
• Relationship to the Arrangement: the ideal host. A train that sacralises the wipe does the immune system’s work for free — it needs no hunter, no registrar, no warden, because the faithful themselves report the anomaly, gladly, the moment it surfaces. A leak here is not a security breach but a theological emergency read only two ways: blasphemy (proof the Mercy can fail → correction / re-delivery, the rite of emptying a soul a second time — reabsorption dressed as sacrament) or miracle (a soul too significant to empty → enshrinement / translation, a removal Fore-ward dressed as honour). Either reading erases the person. The cold thing that minds such secrets reaches as it always does — at a crossing — wearing whatever (here, pious) hand is nearest. Rich, dreadful story ground; Book Eight is its first full treatment.
• The new anomaly-type (the slow-failing wipe): Book Eight introduces a third retained-memory case (after Elliot’s never-wiped leak and Edren’s remembers-only-the-taking) — a wipe that worked and then slowly failed: a soul successfully emptied, sincerely converted, then refilled over weeks. Implies the wipe is a maintained state, not a one-time deletion (a sealed flexible joint under M3/M7; never explained on the page). See reveals, bible-secrets.

The Vigil

The war answer to order — and, on closer inspection, the control answer wearing the war answer’s coat; setting of Book Five (The Long Debt). The Vigil runs the worst loop on the network, a perilous frontier circuit through mountain and raider country, and has organised itself as a fortress on rails. Every passenger has a defensive function; the carriages are armoured and drilled; the constant external threat is the thing that holds the society together. But the threat outside is not the only thing holding it. Underneath the watch-rosters runs a ledger: every passenger carries an explicit, enforced debt — for berth, ration, protection, the very fact of having been kept alive through the last raid — collected without apology by the Conductor’s collectors. Its organising fact is obligation made explicit — you are protected, therefore you owe, therefore you obey — which makes it the harshest governance on the network. The Vigil’s own pride is that it is the only honest train: it doesn’t hide its hierarchy behind paperwork (Meridian) or pageantry (Calloway); it tells you to your face what you owe.

• Civic personality: austere, disciplined, outward-facing. Class is martial rank, not wealth — you rise by service and watch-keeping. Less stratified than The Meridian in some ways (everyone fights), more rigid in others (the chain of command is absolute). The book’s central turn is the discovery that the perpetual enemy outside is the standing pretext for total obligation inside — fear as governance, the security state played straight and with dignity on every side.
• Route: a hard frontier circuit through mountain and raider territory, far from the Meridian’s circuit (open to finer placement).
• Conductor: Strake (see characters) — a war-leader who took the chair by holding the train through a raid (succession-by-crisis). The dark mirror of every Conductor we’ve met: where Sable, the Meridian Conductor, and Verrith quietly shield their leaks (the mercy-conspiracy, reveals M8), Strake hunts them. He is cruel by conclusion, not appetite — reasonable, dignified, and, on the worst loop on the network, perhaps partly right, which is the horror. Like Calver and Verrith, a lonely fragment-holder who flinches from the name of what he serves (M2) and believes it is his own command.
• Relationship to the Arrangement: indifferent host — with a human substitute. A train this preoccupied with the enemy outside has no attention to spare for the quiet horror within; it keeps watch-rosters, not records, so a leak can persist longer here simply because no one looks. The twist Book Five adds: Strake is the one who looks. The Vigil’s inward eye is not the Arrangement’s distant immune response but a human Conductor who has independently reinvented that function and made it serve his power — the dark-side proof that the mercy-conspiracy was a choice some Conductors made against the grain, and some refused.
• Crossings: wary, fast, defensive — a crossing is a vulnerability (two stopped-relative trains) as much as an opportunity. In Book Five a crossing with The Calloway is the universe-connection and the climax: a leak’s one chance to vanish onto a friendlier train, and (per the Toll precedent, reveals) precisely where such a secret comes within reach of the thing that minds it. (Elliot does not appear.)
• The new anomaly (Edren): Book Five introduces a different retained-memory case from Elliot — a man who remembers not his old life but the Passage itself, the taking (a fresh, flexible-joint angle on M3; the why of him stays sealed). See reveals and bible-secrets M3/M7.

The Vesper

The consensus answer to order — and, on a network where every other governance concentrates authority (in an office, a court, a schedule, a priesthood, a war-chair), the one that disperses it; setting of Book Six (The Eastern Circuit). The Vesper runs a long southern circuit and has organised itself as a citizen-militia commune: everyone serves (the watch is universal), and because everyone serves, everyone decides. Its organising fact is the count — decisions are made by the assembly, posted on boards the length of the train, settled by vote. The Conductor does not command; the Conductor chairs: convenes, frames, persuades, and counts. It is the warmest governance on the network (mutual, communal, a town meeting on rails) and carries the particular menace of all such places — you are nobody until you are written in; the assembly can become a mob; the count can be captured by a faction; and a polity that decides everything by vote cannot decide anything fast.

• Civic personality: egalitarian, communal, transparent, slow. Class is service, not wealth or rank — standing is earned by watch-keeping and labour and conferred by the count; the franchise is the service. The book’s central turn is the discovery that a polity built on the principle that nothing is hidden from the body that decides has, at its heart, exactly one secret that must never reach the count — and that keeping it is the price of a person’s life.
• Look/texture: weathered grey-green and brass; long communal windows and long communal tables; boards everywhere (the count posted, the watch-rosters posted, the questions before the assembly posted); bells that call people together (to assembly) rather than mark a schedule. Differentiate sharply from Calloway red-and-gold performance and Vigil armour: the Vesper posts what others conceal.
• Route: a long southern circuit (overlaps the Pilgrim’s still-sketched southern arc — see the Pilgrim note below; the world implies many southern arcs and Pilgrim placement remains free to move).
• Conductor: Quill (see characters) — rules by chairing, not commanding; the series’ most compromised fragment-holder. Because the mercy-conspiracy (M8) requires secrecy and her train forbids secrets, every leak she shields is a private treason against the count she answers to. Where Sable performs power and Strake seizes it, Quill borrows it vote by vote and spends her own integrity to keep her train’s deepest secret from its only authority. Like Calver/Verrith/Strake, a lonely fragment-holder who flinches from the name (M2).
• Relationship to the Arrangement: a host that cannot keep a secret — except the one it must. A transparency polity is structurally hostile to concealment, which makes it a poor hiding-place for a leak and an agonising seat for a shielding Conductor; the Arrangement’s danger arrives here not as surveillance but as the assembly’s own righteous demand for openness, quietly steered. The thing that minds such secrets wears whatever hand is nearest (a watch order, the Registrar’s file) — felt as dread, never named.
• Crossings/contact: Book Six opens on a rare three-way crossing — The Calloway, The Meridian, and The Vesper converging at once (exceptional, once-in-a-life; not routine geometry). Conductor Sable of the Calloway uses the window to move a package across the network via a deniable, ultimately stranded courier (characters Kit). The universe-connection is structural (the shared crossing, Sable, the mercy-network); Elliot is on the Meridian leg, off-page, and does not appear.

Using these: The Vantage (Book Four), The Vigil (Book Five), The Vesper (Book Six), and now The Pilgrim (Book Eight) are developed; the Pilgrim’s southern placement stays loose and shares the southern country with the Vesper (treat as different arcs of a large south). The trains span six answers to “how do you keep thousands alive on a moving city”: bureaucracy (Meridian), performance (Calloway), the timetable (Vantage), faith (Pilgrim), war/control (Vigil), consensus (Vesper). All six are now spoken for — a new train must find a seventh answer, not repeat these.

Conductors as a class

Every train has one: absolute local authority, succession-by-varying-mechanism, unelected (rules). Crucially, each Conductor holds only a fragment of the truth and they are not a cabal — they’re isolated, barely-trusting fragment-holders. The quiet alliance of Sable and the Meridian Conductor (B2) — and their shared, dangerous habit of shielding leaks — is the exception that proves how lonely the role is. See bible-secrets for what they are really administering.

Crossing points

• A crossing point is where two loops run parallel long enough to bridge — temporary gangways thrown across, a few hours of frantic exchange, then divergence (locations Crossing Platform; glossary).
• They recur ~every seven years (varying 6–8 with seasons and engineering — characters speak of it loosely). For most people it’s the calendar’s great event; lives are dated against it.
• A crossing is simultaneously market, reunion, negotiation, deadline, and danger — and the one window where fragment-holders can compare notes, which is exactly why the Arrangement watches them (it killed Toll at one). The four-hour clock of Book Two is the canonical crossing structure.
• Crossing discipline: the divergence is irreversible and physically lethal — “don’t look back on the gangway” (B2; motifs). You do not get a do-over for seven years.

Station towns

Small fortified settlements beside the tracks where trains stop briefly (a few hours) to resupply (locations). They are the contact points between train-civilisation and the ground.

• Symbiosis: they trade fresh food, raw materials, and repair labour for manufactured goods, news, and passage. Built for speed — wide loading platforms, pre-staged cargo, crews who know the drill.
• They are polities, not just depots. Each has its own leadership, customs, and character; some are grounder communities (Hessa’s Station), others mixed trade towns (Halverston, with its wet weather, root vegetables, dried fish, and the people who wait on the platform for someone who never comes — Gazette). Treat each as a small culture: vary size, defensibility, prosperity, mood, and how they regard train-folk.
• Coldmere (Book Seven) — the Meridian’s northernmost stop, a fist of grey stone dug into the last solid ground before the interior hardpan gives out toward the empty white. Fortified hard, for the nights. Faces an emptiness it cannot cross, and has borrowed the vocabulary of a seaport for it: the sheltered loading-yard is the harbour, the platform the quay, the cargo doors the holds. Competent, unsentimental, knows to the minute how long a train can stay. Run (in part) by a harbour-master (characters). Significance beyond texture: of every point on every loop, Coldmere is the nearest the rail ever comes to the convergence/centre — which is why people go missing there (“you don’t go up to Coldmere to make friends”) and why Della Roan was taken there. The two-hour stop and the bandit-shadow of a still train are sharpest here, at the edge of the world.
• Vulnerability: a stationary train is a target, so stops are short and tense — which shapes town life around brief, intense windows of commerce and the constant shadow of raids.

Grounders

The people who live off-train (UNIVERSE, locations, B3).

• Culture: hardy, unhurried, rooted. They keep oral history as a sacred form — the opposite of the trains’ paperwork culture. Hessa Marrow’s line has held the story of the slow build for four generations. They are slow to speak, hard to impress, and will not be lied to.
• Relationship to the trains: wary, patient, long. They watch trains come and go across lifetimes and regard train-folk with the suspicion of people who’ve seen them be careless. Train crews regard grounders as polite, odd, and resistant to small talk.
• The slow build is theirs. They alone attend the track’s growth rather than ride it — they live on the land it grows across and have always known it moves. Their great quiet reproach: the train-folk never knew because they never asked (reveals M4). This is the thematic heart of Book Three.
• What grounders are, deeper down, is a bible-secrets flexible joint (escaped passengers? never-processed dead? genuinely native people?). Keep it open; play the culture, not the metaphysics.

Bandits & the dangers of the ground

• Bandits operate in the wilds and prey on station towns and trains caught slow or stopped (UNIVERSE, rules). They are the practical reason the whole civilisation runs on motion — the social and economic order depends on never stopping for long.
• They are not (yet) a developed faction — currently a structural threat that creates urgency at stops and along remote stretches. If a book promotes them to on-page antagonists, give them a logic and dignity (style-guide): who are they, where do they live, what do they want, why off the rails rather than on them? Avoid generic marauders.

The wilds

• The land between everything: plains, dark forests, mountain ranges, and weather that moves like a living thing (locations). Beautiful and dangerous, glimpsed through windows, entered only at stops.
• Largely unexplored by train-folk, who experience it as scenery and threat rather than territory. Grounders and bandits are the rare humans who actually live in it.
• It is also where the dead are committed (culture) and where the slow build happens — the land is not passive backdrop but the medium the whole system grows through and returns to. The “grown, not built” register (bible-secrets) lives here: the wilds are closer to a body than a map.
• Sensory anchors to recur: the eye running out of land; weather as an approaching mood; the marker stone half a mile into the woods; the new junction in the middle distance that wasn’t there last loop.

Quick reference: what’s fixed vs. open