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How to Catch Continuity Errors in a Novel
Heshan Fernando
Co-founder & COO
In chapter two your protagonist has grey eyes. In chapter seventeen, written nine months later, they’re green. Nobody notices during drafting because you weren’t reading chapter two — you were writing chapter seventeen.
Continuity errors are a structural consequence of how novels get written: over a long period, out of order, with heavy revision. They’re not carelessness. They’re what happens when a book is too big to hold in your head at once.
What actually goes wrong
Four categories cover nearly all of it.
Physical details — eye colour, height, scars, handedness. Established early, forgotten, re-invented later.
Ages and dates — a character is 41 in chapter five and 39 six months later in the story’s timeline. Timeline arithmetic is where these hide, because both statements look fine in isolation.
Name spellings — Mariam and Maryam, both in the manuscript, both apparently deliberate. This one is invisible to a spellchecker because both are plausible names.
Objects and places — the kitchen door that’s on the left in chapter three and the right in chapter twelve; the car that changes colour between scenes.
Readers do notice. Reviews mention exactly these things, and once a reader spots one they start looking for others, which is the real cost.
Why people get stuck here
- You can’t proofread your own memory. You read what you meant, especially in a passage you’ve rewritten five times.
- Revision reshuffles the source of truth. A detail established in a scene you later cut is still referenced two chapters on.
- Character bibles go stale. Written at the start, never updated, and out of date by the second draft.
- Search only finds what you think to look for. You can’t grep for a contradiction you don’t know exists.
What good continuity checking looks like
A sheet of facts, not a biography
Record the things you’d forget: eye colour, age, handedness, distinguishing features, the name of the town they grew up in. Not their motivations — you won’t forget those.
Checked against the whole text at once
The value comes from comparing every mention of a fact simultaneously, which is precisely what a human reader can’t do across 90,000 words.
Name variants caught explicitly
A spellchecker accepts both Mariam and Maryam. Only a comparison across the whole manuscript catches that both appear.
| Error Type | How It Happens | How It’s Caught |
|---|---|---|
| Physical detail | Re-invented in a later draft | Compare all mentions |
| Age or date | Timeline arithmetic | Check ages against elapsed time |
| Name variant | Typed from memory | Whole-manuscript comparison |
| Object or place | Scene rewritten in isolation | Sheet of established facts |
Common mistakes to avoid
- Building the character sheet after the first draft, from memory, and enshrining the errors in it.
- Fixing a contradiction in one place without updating the sheet, so the next draft reintroduces it.
- Assuming a continuity check catches plot problems — it catches facts, not logic.
- Renaming a character with find-and-replace and hitting the same string inside other words.
- Leaving continuity to the copyedit, when a fix at that stage means changing pages you’ve already polished.
How to do it with Character Consistency Checker
The Character Consistency Checker compares your recorded facts against the manuscript, in your browser.
- Write a short sheet per character — the facts you’d forget, not their biography.
- Run the check over the draft and read the contradictions with their chapter references.
- Decide which version is canon, fix the other, and update the sheet immediately.
- Re-run after major revisions, since restructuring reintroduces exactly these errors.
Other manuscript tools that keep your text on your device are in the tools directory.
Frequently asked questions
Can it catch plot contradictions?
No. It matches recorded facts against the text. Whether a character’s decision in chapter twelve contradicts their motivation in chapter four is a reading question, and it needs a person.
Why do these errors happen at all?
Because a novel is written over months, revised out of order, and held only partially in memory. Your recollection of the current draft is never the same as the draft. That gap is where every continuity error lives.
Is my manuscript uploaded?
No. The text is processed in the page and nothing is stored or transmitted.
Final thought
Keep the sheet updated as you fix things, not after. A character bible that lags the manuscript by one draft is how the same error gets fixed twice and reintroduced three times.