Cold-Case Mystery Generator
Reopen a fictional old case through new evidence, changed witnesses, and the cost of uncovering the truth.
Shape your book
Time should change the case: records disappear, relationships shift, and a fact once considered harmless gains meaning.
Worth including
- Identify the exact new fact that justifies reopening the case.
- List which evidence survived and which cannot be recovered.
- Give conflicting memories plausible causes.
- Tie present resistance to a consequence of the old event.
- Resolve the historical puzzle without pretending every loss can be repaired.
Common traps: Treating an old memory as perfectly reliable evidence; Solving the case with technology introduced at the last moment.
Try an idea
Common Questions
Can I base this on a real unsolved case?
This page is designed for original fiction. Invent people and events rather than presenting unverified allegations about real individuals as a solved crime.
What should I check in the finished draft?
Review the clue order, timeline, and solution. AI can miss instructions; edit the manuscript before sharing or publishing it.
How does the free book work?
Eligible new accounts can create a first book of up to about 10,000 words without a card. Reading and downloading the full book requires unlocking it through trial checkout or a qualifying purchase. A trial renews at the price shown at checkout unless cancelled before renewal.
Can I change the idea before writing?
Yes. Edit the prompt or choose an example, then continue to the book creator to choose your settings. This page carries your idea through signup or login; you review the finished draft before sharing it.