Confidential · Working Draft

The Case File

A prompt builder for writers drafting mystery & puzzle books — works fully offline, nothing leaves your browser.

I. The Setup

Working title

Setting

Era

Tone

Central crime

II. The Cast

Protagonist / sleuth type

Number of suspects

Red herrings

Point of view

III. The Puzzles

Puzzle types to include

Cipher / code-breaking Logic-grid deduction Hidden object Anagram / wordplay Map / route tracing Math riddle Picture / rebus Crossword

Puzzle difficulty

Number of puzzles

IV. The Book

Format

Target length

Number of chapters

KDP extras

Series potential Answer key section Interior illustrations Large-print friendly Printable clue sheets Companion journal

Anything else? Character names, must-have twists, inspirations, content to avoid…

Story Bible Prompt

Fill in the case details on the left, then click "Open the Case" to generate four ready-to-use prompts — a story bible, a puzzle design brief, a chapter outline, and Amazon KDP blurb & metadata copy. Paste any of them into your favorite AI writing assistant, or use them as a personal planning checklist.

No data is sent anywhere — this page runs entirely in your browser, offline, forever.