SIGNED IN BLOOD

Claudette Sayer has spent fifteen years telling people what they actually have, which is almost never what they think. She rebuilt her career from a single, well-documented mistake — a forgery she called authentic at thirty-two — and the ruthless second-guessing she installed in herself afterward has made her the most reliable authenticator in her field. When an elderly collector insists one volume in his private library is a missing, hand-annotated Hemingway manuscript, she drives out to his secluded estate fully prepared to be right about being wrong.

Then he turns up dead. The manuscript vanishes the same night.

Insurance investigator Graham Alderly arrives the next morning with a financial trail she can't read, a competing theory about what the manuscript actually is, and the inconvenient habit of being correct about things she assumed only she would notice. Before she can finish cataloguing what's gone and what it means — there are irregular payments arriving from literary estate management companies for eight years running, an estate representative who knows the manuscript's physical binding in impossible detail, a twelve-minute gap in the timeline that someone very composed has been careful not to account for, the moment Graham stops her from sending a letter that would have ended the investigation before either of them understood what they were investigating, and the slow, specific realization that the manuscript isn't valuable because of what it's worth — it's dangerous because of what it says.

She's spent years building a professional life on the principle that certainty is earned, not assumed. He's spent his on the principle that what people say something is worth rarely matches what they'll do to protect it. One murder, one missing manuscript, and nineteen days in a house that's been keeping its secrets for a decade are about to show them both exactly where those principles break down.

A rare books mystery with a thriller edge — built on expertise, professional friction, and clues hidden in plain sight. The kind of book you read in two sittings and then go back to chapter three because you can't believe you missed it the first time.

WHY THIS WILL SELL

→ Books, Bookstores & Libraries (Cozy) is a new entrant in the data with $87K estimated monthly royalties and a competition index of 37 — reader demand is outpacing supply, and this book is positioned directly in the whitespace where that demand is unmet

→ Dual-category stretch into Crime Thrillers gives the buyer two category footholds without misrepresenting the book — the pacing and intellectual tension earn both

→ Professional investigator hero type carries a competition index of 100 (the ceiling) in current cozy character data — dual professional protagonists with complementary expertise is the highest-demand hero structure in the market right now

→ Forgery and fraud crime tropes are the least-crowded in the cozy category (competition indices of 17 and 58) — the manuscript-authenticity engine fills this gap directly rather than competing in saturated murder-of-the-week supply

→ Fair-play mystery structure with planted clues from chapter three rewards rereaders, generates review depth, and builds the kind of word-of-mouth that travels in mystery reader communities

TROPES: • Competence-Forward Heroine • Reluctant Partnership • Sparring Equals • Expertise as Attraction • Book as MacGuffin • Found-Object Mystery • Race Against the Clock • Professional Friction Romance • She Notices What He Can't Read / He Sees What She's Too Close To • The Partnership That Solves It Neither Thread Could Alone • Fair-Play Puzzle Mystery • HFN

HEAT LEVEL: Sweet / Closed Door to Low Moderate — chemistry built entirely through professional sparring and mutual recognition; one brief steadying touch late in the story; the most intimate moment is a silence in a library that lasts longer than either of them intended

Perfect for fans of: Jacqueline Winspear, Catriona McPherson, Alexander McCall Smith, and readers who cross between the cozy and Tana French shelves

WHAT'S INSIDE THIS PACKAGE

⭐️ Story Premise — high-concept pitch, elevator pitch, and Market-Matched™ analysis with dual-category positioning (Books, Bookstores & Libraries cozy + Crime Thrillers stretch), competitive differentiation, full suspense architecture including hidden timeline, fair-play clue audit, and misdirection map

⭐️ Complete Codex — full story bible with both POV leads (Claudette Sayer and Graham Alderly), supporting cast of 6, the Halcyon estate and Brevet, Maryland setting, 19-day compressed late-October timeline, dual third-person limited voice system with distinct verbal patterns for Claudette (precise, sensory, finishes sentences) and Graham (economical, gap-oriented, notes absences), investigation arc structure replacing romance arc, sweet-to-low-moderate heat guidance, and series seeds for future Claudette Sayer rare books mysteries

⭐️ Chapter-by-Chapter Outline — 26 chapters + epilogue with emotional beats, word-count targets, scene breakdowns, dual-thread investigation structure, fair-play clue schedule, and the pivot beat where both threads converge

⭐️ AI-Ready Chapter Prompts — detailed writing instructions for every chapter with complete character context, distinct voice guidance for alternating POV, investigation continuity facts, heat-level guidance, and key dialogue beats embedded in every prompt

⭐️ Marketing Copy — Amazon listing, back cover copy, 50-word short description, Instagram and Facebook posts, newsletter announcement with three subject lines, reader magnet concepts, reader targeting profile, and Ideogram cover prompt

⭐️ Market-Matched™ Brief — market snapshot table, why-this-will-sell data points, competitive positioning, seven-keyword strategy with rationale, and launch positioning covering categories, pricing, cover direction, and series strategy

One buyer. One story. Exclusively yours.