Template

Series Bible Template

Last updated May 11, 202610 min read

A series bible is the master reference document for a multi-book project. It lives above any individual book and tracks the things that have to remain consistent (or evolve in tracked ways) across every installment. By Book 3 of a series, the cost of not having a series bible becomes painful: characters whose eye colours change between books, technologies whose rules drift, timelines that no longer fit themselves, secondary characters whose names you cannot remember.

This template gives you a framework for the series bible most working novelists actually need. It is built for fiction series -- fantasy trilogies, romance series with a recurring cast, mystery series with a returning detective, science fiction worlds spanning multiple books. The same template can be adapted for television writers' rooms, comic book continuities, and other long-form serial projects.

One critical principle. The series bible is not the same as the worldbuilding bible. A worldbuilding bible focuses on the world's static features -- geography, magic, history. The series bible covers everything: the world, the characters, the plot arcs, the publishing-level decisions. The worldbuilding bible can be one section of the series bible, or a separate document the series bible references. Either approach works.

Section 1: Series-Level Premise

Articulate what the series is, beyond any single book. The premise should be sharp enough that you could pitch the entire series in a paragraph if someone stopped you at a literary event.

Series Logline

A one-sentence pitch for the whole series. Not for any particular book -- the series. "A grieving detective hunts a serial killer who turns out to be himself, across five investigations that span fifteen years." The series logline frames every individual book.

Series Arc

The macro story the series is telling. What is the protagonist's journey across the whole series? Where do they start, and where do they end? Even if you have not written the final book yet, you should know the destination, even if the route changes.

Series Theme

The thematic question the series is exploring across all books. Individual books may approach it from different angles, but they should be in dialogue with the same fundamental question. "What does loyalty cost when the people you owe loyalty to are wrong?" "Can a person outrun the damage done to them in childhood?" The series theme is the philosophical spine.

Genre Position

What corner of the market the series occupies. Specifically. "Cozy mystery set in a small Massachusetts town." "Epic fantasy with hard magic and grimdark tone." "Contemporary romance with neurodivergent leads and slow-burn pacing." Knowing your genre position helps both your craft and your marketing.

What to write here: Four short sections. Logline, arc, theme, genre.

Section 2: Book Map

The plan for the series as a sequence of books. This section may evolve significantly between Book 1 and Book 5 -- and that is expected -- but you need a working version from the start.

For each planned book, capture:

Book number and working title: Subject to change.
Book logline: A one-sentence pitch for this specific book.
Position in the series arc: What this book accomplishes in the macro story. Is it the setup, the midpoint reversal, the dark turn before the finale, the resolution?
Cast for this book: Which series-cast characters appear, plus any book-specific characters.
Status: Drafted, outlined, planned, sketched, conceptual. Knowing where each book is helps you allocate planning effort.

What to write here: A short entry per planned book. Three books is a comfortable minimum for a series. Five to seven is the typical scope of a planned arc.

Section 3: Recurring Cast

The characters who appear in more than one book. For each, capture:

Name and role: One-line identification.
Series arc: Where this character starts in Book 1 and where they end in the final book. Their macro journey across the series, distinct from any single book's arc.
Books they appear in: Which installments include them. Useful for tracking when characters disappear from the series for too long.
Continuity facts: The fixed details that must stay consistent across books -- physical description, backstory, key relationships, established skills. This is the field that prevents the "her eyes were green in Book 1 but blue in Book 3" error.
Voice notes: Their speech patterns, verbal tics, signature phrases. After a year between writing books, voice consistency is one of the things that drifts most easily.

What to write here: A profile per recurring character. For series with large recurring casts, this section will be extensive. Plotiar's flowchart can visualize the cast and its relationships.

Section 4: World and Setting

The series-level worldbuilding. This is where you reference the Worldbuilding Bible Template if you have one, or where you maintain the worldbuilding in line if your series does not warrant a separate bible.

World rules: The magic system, technology, social structure, geography, and any other speculative or distinctive elements. Whatever the reader has been told is true must remain true unless the story explicitly evolves it.
Locations: The recurring places. The protagonist's home town, the agency headquarters, the city the series keeps returning to. Each significant location should have a short description and a list of which books it appears in.
History and lore: The events of the past that the series treats as canonical. Some lore is revealed gradually across books; track what has been shown and what is still in reserve.
Institutions: Schools, governments, guilds, family lines, secret societies. The fixed structures the characters move through.

Section 5: Series-Level Plot Threads

The arcs that span multiple books. These are different from the arc of any individual book.

Macro plot thread: The overarching plot question that the entire series is answering. What is the central conflict that runs from Book 1 to the finale?
Secondary threads: Subplots that span multiple books. A character relationship that develops across the series, an antagonist who appears in three books, a mystery that takes the whole series to solve.
Setups and payoffs: Threads planted early that pay off later. Each setup should have a planned payoff book. Loose setups that never resolve are the series writer's nightmare.
Foreshadowing reserved for later books: Things you want to plant in Book 1 that pay off in Book 4. Track these explicitly so you do not lose them.

Section 6: Continuity Database

The reference layer. The granular details that have appeared in print and are therefore locked.

For each book that has been drafted or published, capture:

Established facts: Anything stated in the prose that future books must respect. A character's birthplace, a magic system rule, a date, a relationship status.
Named items: Every named character, location, object, organization, or term. The "named items" list saves you when you cannot remember the village's name and need to keep using it consistently.
Character status by end of book: Alive, dead, transformed, exiled. Where every character ends each book.
Unresolved threads: Plot threads opened in this book that have not yet paid off. Track them until they resolve.

What to write here: This section grows with each book. After Book 1, capture all of the above for that book. Repeat for every subsequent book.

Section 7: Stylistic and Authorial Decisions

The craft-level decisions that should remain consistent across the series. Drift in these is one of the most invisible but most damaging series errors.

POV approach: Single-POV or multi-POV, first or third person, present or past tense. Established in Book 1, hard to change later.
Voice and tone: The register of the prose. Lyrical, stripped-down, ironic, formal. Maintain consistency across books.
Chapter structure: Standard chapter length, use of part divisions, scene break conventions.
Recurring stylistic features: Anything distinctive to the series. Italicized internal thoughts, untranslated terms, epigraphs, parallel openings. If something is a signature, document it.

Section 8: Publishing and Marketing Reference

The business-level facts about the series. Useful when answering interviews, writing back-of-book copy, or briefing a publicist.

Word count targets per book: The approximate length each book should hit, based on genre conventions and the series' established pattern.
Comp titles: Books and authors the series sits beside in the market. Useful for pitching, marketing, and pitching adaptations.
Reader expectations: The implicit promises the series has made -- "the love interest survives," "no character introduced late will be the killer," "every book ends on a partial cliffhanger." Breaking expectations can be powerful, but you should do it deliberately.
Series status: Active, on hiatus, complete. Where the series stands in the writer's life and the publisher's pipeline.

How to Customize This Template

For trilogies: All sections apply, but Section 2 (book map) can be tightly planned from the start. Three books gives you a clean three-act series structure: setup, confrontation, resolution.
For open-ended series (mystery, urban fantasy, romance): Section 5 (series-level plot threads) becomes critical. Open-ended series live or die on the strength of their macro arcs that develop across many books while individual books remain self-contained.
For interconnected standalones: Sections 3 (recurring cast) and 4 (world) carry the weight. Interconnected series share a world or a cast without sharing a continuous plot. The bible's job is to keep the shared elements consistent.
For television-style series: Treat each season as the equivalent of one novel. Section 2's "book map" becomes the season-by-season plan. Section 7's voice and tone become the show bible.
For mid-series: If you started without a bible and are now several books in, build it retroactively. Read your existing books and extract Sections 6 (continuity database) and 3 (recurring cast) from what is already in print. This is painful but pays off immediately in the next book.

Build your series bible in Plotiar. Keep your premise, book plan, cast, world, and continuity all linked in one project, so every book draws from the same source of truth. Try it free.