For Amazon KDP publishers, Etsy sellers and anyone with their own store who wants a Thanksgiving or Christmas mystery book without writing a single clue

The Strange Reason a Computer Has to Solve Your Whodunit Before Anyone Else Does

Pick Thanksgiving or Christmas. I'll build the whole whodunit (suspects, clues, answer key, the lot), prove it has exactly one killer, and hand it over ready to publish on Amazon KDP, Etsy or your own store. From $27.

See the four ways to get your book

One-time prices from $27. Monthly club $67/month. Cancel any time.

Sample register: five clues, seven suspects

  1. The killer arrived after 2:00 PM.
  2. The killer's Course is not Main.
  3. The killer's Course is not Drink.
  4. The killer arrived before 3:15 PM.
  5. The killer's Course is Dessert.
IDNameDishArrived
1Mabel StantonPumpkin Pie1:15 PM
2Hugo BrandtRoast Turkey2:40 PM
3Tessa AshworthGravy3:05 PM
4Calvin AmesApple Cider2:20 PM
5Nora HollisCornbread3:30 PM
6Felix EwingCranberry Sauce1:50 PM
7Imogen FrostPecan Pie2:55 PM

Every clue is true of Imogen Frost. Every other suspect breaks at least one clue. Your books are checked this way, only bigger.

It's 11:40 at night, and clue 7 just contradicted clue 12

The house is quiet. Your laptop is glowing like a tiny campfire, and on the screen is a whodunit you've been wrestling with for three hours.

You wanted something simple: a holiday mystery book with a handful of suspects, a stack of clues, and one satisfying answer. Something you could put on Amazon, list on Etsy, or sell from your own store.

So you pasted the prompt. And the AI wrote something that sounded wonderful.

Then you read clue 7. "The killer wore a red scarf." Clue 12 said the killer had no scarf at all.

Two suspects fit every clue. Then, as you checked again, none of them did.

You know the feeling. It's not that you're afraid of hard work. You're afraid of putting your name on a book that a stranger solves wrong, then tells the whole internet about in a one-star review.

And this wasn't your first prompt pack. Maybe it was your fourth. Each one promised the moon. Each one left you with a pile of nearly-working files and a holiday calendar that kept getting shorter.

What if somebody else lost the sleep instead?

Here's the weird part nobody tells you

A chatbot writes a puzzle the same way it writes a poem: one believable sentence after another. Nothing in there is counting suspects. Nothing is keeping score. Nobody is asking, "Wait, does this clue contradict clue 12?" It sounds like a mystery. It just can't prove it's solvable.

So I stopped asking a chatbot to write clues and did it backwards.

  1. The facts get built firstEvery suspect and every detail is generated as data and locked in.
  2. Clues come from the factsEach clue is made from that data, so the words can't drift away from the truth.
  3. A computer tries to break itIt checks that the killer fits every clue and that exactly one suspect is left.
  4. A second program solves the printed pagesIt reads the book the way your customer will and has to land on the same killer.

If the two don't agree, the book doesn't ship. The mystery gets solved before it ever reaches you.

Why holiday whodunits, and why now

1,000,000+copies sold worldwide of the Murdoku series, a USA Today bestseller with several volumes already out. Readers of murder-mystery puzzles buy the next one.
Nov 26is Thanksgiving this year. Christmas Day is Dec 25.
One open laneWhen I searched this season, Christmas already had several elimination-style books and I found none for Thanksgiving. [Re-check Amazon the day you publish this page]

Murdoku figure from the series' publisher listings on Amazon and other retailers. Holiday dates are the US dates. These figures show that the format is popular and the window is real. They do not predict your sales.

Pick your holiday. Pick your format.

The Elimination Register

A big suspect list. Readers cross people off, clue by clue, until one name is left. The format that's flooding the charts, built right.

Logic-Grid Case Files

A collection of short whodunit cases, each with its own deduction table. Easy, medium and hard cases in one book.

The Countdown Calendar

One small mystery a day, building to the final accusation. A 24-day Christmas advent or a 7-day Thanksgiving countdown.

Every book is built from its own seed, with its own cast, its own culprit and its own clues. Nobody else gets your book.

Choose your level

Every level includes the finished interior, the answer key and the verification report, so you can see the proof for yourself.

Bronze

The Starter Mystery. Good for testing the waters.

$27

One-time payment

  • One book, one holiday (Thanksgiving or Christmas)
  • Logic-Grid Case Files format [set case count, e.g. 25]
  • Print-ready KDP interior PDF
  • Full answer key
  • Verification report
Get Bronze for $27
Holiday Whodunit Book Factory Bronze

Silver

The Publisher's Pack. Everything in Bronze, plus:

$37

One-time payment

  • Any format: Register, Case Files or Calendar
  • Your story: the opening and the reveal
  • KDP listing pack: title and subtitle options, 7 keyword phrases, description
  • Cover brief for any designer or cover tool
Get Silver for $37
Holiday Whodunit Book Factory Silver

Best value

Gold

The Holiday Double. Everything in Silver, doubled:

$47

One-time payment

  • Two books: one Thanksgiving and one Christmas
  • A listing pack and cover brief for each book
  • Etsy and own-store listing copy, including the AI-disclosure line Etsy asks for
  • Priority build
Get Gold for $47
Whodunit Book Factory Gold

Monthly

The Mystery Club. For publishers who want a whole series.

$67 / month

Cancel any time

  • Two fresh, verified books every month, any holiday and any format
  • Build Volume 1, 2, 3 and keep readers coming back
  • Listing pack and cover brief for every book
  • Series planning: volume titles, casts and settings that fit together
  • Priority queue
Join the Mystery Club
Whodunit Book Factory Monthly

Launch pricing. After 19/06/2026 / prices go up by $10__on all packages. Delivery time: 2 days depending on the order.

How it works

  1. Choose a level and fill in a short formHoliday, format, audience (cozy adult, teen or family), title ideas and your author name.
  2. I build it and prove itEvery book goes through the full set of checks, including the second program solving the printed pages.
  3. You publishOpen the files, read the report, upload. That's it.

Where you can sell it, and what to know first

Amazon KDP

The interior is built for KDP paperback. KDP asks you to declare AI-generated content when you publish. I'll give you a plain note on how your book was made so you can answer correctly.

Etsy

Etsy requires full disclosure about how a product is made, and seller-prompted AI creations must say so in the listing description. Etsy also expects digital items to be made or designed by the seller, so read its seller policy before you list. Gold includes the disclosure line to paste into your listings.

Your own store

Systeme.io, Gumroad, Shopify or your own site, with the fewest platform restrictions. You choose the price and the packaging.

I can't promise sales on any platform, and I won't. What I can promise is that the puzzle inside is built to be solvable and is checked before it reaches you.

See a real sample before you buy

Open a finished puzzle from each format. Every sample comes with its verification report, so you can see exactly what was checked.

The Elimination Register

Clues knock suspects off the register one at a time until only the killer is left.

View sample puzzle

Logic-Grid Case Files

Classic grid deduction cases with a full cast, a culprit and a single clean solution.

View sample case file

The Countdown Calendar

One short mystery chapter a day, counting down to the holiday.

View sample calendar

See a sample verification report  |  Download a full sample book (PDF)

Quick answers

Isn't this just AI slop?

The puzzle logic isn't improvised by a chatbot. It's generated from data and checked by code. The story text is written with AI assistance and run through a check for clichés and name mix-ups.

Do I get the rights to sell it?

"Yes. You receive a commercial-use license to publish and sell your book in any format."

Can I put my own name on it?

Yes. Author name is on the order form.

Will my book be the same as someone else's?

No. Each book is built from its own seed, with its own cast, culprit and clues.

What if something's wrong with my book?

See the guarantee below. Every book ships with its verification report, so you can see exactly what was checked.

How long does it take?

Bronze 48 hours, Silver 72 hours, Gold 5 days]

Your guarantee

"If your book fails its verification report, I rebuild it free or refund you in full." Only promise what you will honor.]

Start building your holiday whodunit

You can keep wrestling a chatbot at 11:40 at night, or you can send me your holiday and your format and let a computer do the part that keeps you up.

Bronze $27 Silver $37 Gold $47 (best value) Monthly $67

P.S. Thanksgiving is the open lane right now. Christmas is already getting crowded. If you want to be early, this is the week.

Results vary and no sales are guaranteed. Platform rules (Amazon KDP, Etsy and others) change, and you are responsible for following them, including any AI-disclosure requirements. Holiday Whodunit Book Factory is not affiliated with Amazon, Etsy or the Murdoku series.

Disclaimer: Please note that this product does not provide any guarantee of income or success. The results achieved by the product owner or any other individuals mentioned are not indicative of future success or earnings. This website is not affiliated with FaceBook or any of its associated entities. Once you navigate away from FaceBook, the responsibility for the content and its usage lies solely with the user. All content on this website, including but not limited to text, images, and multimedia, is protected by copyright law and the Digital Millennium Copyright Act. Unauthorized copying, duplication, modification, or theft, whether intentional or unintentional, is strictly prohibited. Violators will be prosecuted to the fullest extent of the law.

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Holiday Whodunit Book Factory Bronze