How to build a story bible for a fantasy series

A story bible is a reference you can trust while writing. It should answer practical questions: who owns the disputed sword, how long the road takes in winter, and whether the queen knows her adviser is lying. It does not need to contain everything you have imagined. Begin with the facts that constrain the next chapter, then expand it as the manuscript makes decisions. A compact reference that you maintain is more useful than a detailed encyclopaedia you hesitate to open.

For this example, imagine a fantasy series about a courier carrying a stolen treaty through three rival provinces. We will build the reference around what the courier encounters. The categories are suggestions for organising your own notes, not rules about how fantasy must work. Use a notebook, a set of documents or a writing workspace, provided you can find the answer during a writing session.

Establish what counts as canon

Give each entry a status: proposed, established in draft, or published. A proposed idea can change freely. A draft fact needs checking against scenes before you replace it. A published fact needs an explicit decision if a later book contradicts it. Keep abandoned possibilities in a separate section so that an attractive old idea does not quietly return as established history.

Add a source reference whenever a detail appears in the manuscript. Record the book, chapter and scene label, plus a short note about what the passage establishes. Distinguish narration from a character's claim. If a priest says that no one survives crossing the marsh, the canon may only be that the priest believes it. Leave room for rumours, mistakes and deliberate lies without making your reference itself unreliable.

Characters: record changes and knowledge

Start a character entry with a preferred name, aliases, approximate age, role and immediate desire. Add the physical details that you actually use on the page, rather than completing a long questionnaire. For the courier, a damaged left hand may matter whenever she climbs or fights. Her favourite childhood food may not need recording until it becomes relevant.

Separate stable details from changing circumstances. Record injuries, loyalties, possessions and relationships at the point where they change. A short sequence such as 'before the border crossing', 'after the arrest' and 'end of book one' can be enough. Include knowledge: when does she learn that the treaty is forged, and who knows she has discovered it? This gives you a way to check dialogue against what each speaker can reasonably understand.

Places: write for movement and consequence

For each place, record its location relative to nearby places, the route in, the people who control access and the practical obstacles to leaving. Give travel estimates with assumptions. 'Two days on horseback in good weather' is more useful than a bare distance when you are planning a pursuit. Mark the estimate as provisional until the story fixes it.

Add a few concrete features that affect scenes: a bridge closes at dusk, drinking water comes from a guarded well, or the harbour freezes before the inland roads. Keep a separate space for sensory details already used in the prose. Before returning to a city in a later book, read those notes and decide what has changed. A place should have a history without forcing you to repeat its description.

Factions: connect beliefs to resources

A faction entry needs a public aim, a private pressure, a leader or decision process, and the resources that make it influential. The courier's pursuers might belong to a council that claims to defend provincial independence while relying on grain from the capital. That tension gives you something useful to write about. A motto alone does not tell you how the group acts.

Record internal disagreements rather than treating every member as interchangeable. Link the council to the characters who serve it and the places where its authority holds. Note the date of a leadership change. If the council loses control of a port in book two, later scenes should not assume it can still command the harbour guard. Track actual power alongside formal titles.

Items: follow possession and limits

For important items, record appearance, function, limitations, current holder and the scene where ownership changed. Include copies, damage and mistaken identification if they affect the plot. The treaty may have an authentic seal on a false text, so describe those separately. A character can recognise the seal without knowing whether the words are genuine.

Treat magical objects with the same care. Write down what an object has demonstrably done, what characters think it can do and what it costs to use. Do not turn every speculative possibility into a permanent rule. Before resolving a crisis with the object, compare the scene with earlier appearances. If its ability has expanded, establish the reason in the story rather than silently rewriting the reference.

Lore: keep truth apart from tradition

Organise lore around questions the story asks: how succession works, what magic consumes, why the border exists and which calendars people use. For each answer, separate an authorial decision from an in-world account. Two provinces can tell incompatible versions of the same war. Your notes should preserve who tells each version and why the difference matters.

Keep rules brief enough to consult. A magic entry might list the requirement, effect, cost and known exception, followed by scene references. Add unresolved questions underneath. If you have not decided whether an oath survives the death of its witness, label that uncertainty. Leaving an open question visible is better than inventing an answer in your notes and forgetting to establish it in the manuscript.

Make links that answer writing questions

Connect entries through specific relationships: a character serves a faction, a faction controls a place, an item belongs to a character, or a law applies within a province. Use consistent names and keep aliases searchable. In Mythwrite's Archivum, these categories can sit alongside your writing; the same discipline also works in ordinary documents. The structure matters less than whether you can retrieve the relevant fact quickly.

Try a retrieval exercise before adding more material. Ask where the courier slept before the arrest, who saw the treaty and whether the council can close the northern road. If answering requires opening ten unrelated notes, add a short index or a direct reference. Organise for the questions you repeatedly ask, rather than for an ideal encyclopaedia.

Maintain it after scenes, not instead of scenes

At the end of a writing session, record new facts and changes of state. Spend a few minutes checking names, possessions and knowledge against the scene you just wrote. Once a chapter is revised, update its references and remove obsolete draft claims. Before beginning the next book, save a dated snapshot of the published canon.

Keep a small contradiction list while revising. Each entry should name the two conflicting passages, the decision and any scenes that need correction. Resolve the manuscript and reference together. A story bible earns your trust through that routine: a manageable set of established facts, visible uncertainties and clear evidence of where each decision entered the story.