Book Planning & Story Development

How do I build a series bible across multiple books?

By the WriteLoom editorial teamUpdated 2026-06-03
Key facts
  • A series bible carries facts across books, not just within one.
  • It tracks characters, world rules, timeline, and open threads.
  • It is a living document, updated as each book is finished.
  • It is the authoritative source a continuity pass checks against.
  • Without one, book three contradicts book one in ways readers catch.
Direct answer

Build a series bible as one living document that holds every fact spanning more than one book: character details and ages, world or magic rules, a master timeline, and a list of unresolved threads. Update it the moment each book is finalized, treating it as the source of truth. When you draft the next book, you write against the bible rather than your memory of what you decided three years ago.

Chapter i·Why it matters

A series asks you to keep details consistent across thousands of pages written over years, and memory is not reliable at that scale. Readers track a series closely and notice when a character's eye color, a rule of magic, or a past event shifts between books. A series bible turns scattered decisions into one authoritative reference, so each new book extends the world instead of accidentally contradicting it.

Chapter ii·What to include

  • Character records: names, ages, traits, relationships, arcs by book.
  • World and magic rules that must hold series-wide.
  • A master timeline spanning all books.
  • A list of open threads and promises still to pay off.
  • A per-book changelog so you know what each installment established.
  • A "locked vs flexible" marker for facts you may still change.

Chapter iii·Example

A fantasy author finishing book two updates her series bible: she logs that a side character is now confirmed thirty-two, that the northern kingdom's ruler changed, and that a prophecy is still unresolved. When she starts book three, she drafts against the bible and never has to reread the first two books to stay consistent.

In WriteLoom

WriteLoom keeps one series bible beside every book in the series, so each installment is drafted against the same source of truth.

Plan your series