The Original Murdoku Book

Murdoku – 80 Murder Mystery Logic Puzzles

A USA Today and Publishers Weekly bestseller, #1 at the Times Bookshop (UK), featured in the Financial Times and The Times, and published in 15 languages. Place the suspects on the grid, follow every clue, and reveal who did it.

Publisher Union Square & Co. (US) · Penguin Michael Joseph (UK)

80 full-color illustrated cases ranging from gentle warm-ups to wicked late-book challenges.
Explore unique crime scenes, including a cozy coffee shop, a luxury yacht, an abandoned demolition site and a crowded opera house.
All entirely original cases exclusive to this book. They are not available anywhere else.
Perfect for solo solving, couples, or groups that like arguing over whodunnit.

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Start your first case today, find a copy in your region below.

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Inside the Book

Every case gives you a lineup of suspects, a full-color crime scene, and a detailed solution at the end.
Here’s what a typical spread looks like.

A cast of suspects and the victim, each with clues about where they can or can’t be on the grid.

A 9×9 crime scene with rooms and objects, where everyone needs to be placed. In classic sudoku fashion, there's only one person per row and per column.

Clear, full step-by-step solutions at the back of the book for extra clues or when a puzzle completely stumps you.

Out now

Murdoku: Back in Time

Five eras, 80 new murder mysteries from the past.

Publisher Union Square & Co. (US) · Penguin Michael Joseph (UK)

In Back in Time, your investigations jump across five different eras: You’ll explore Stone Age camps, step into bustling Medieval taverns, uncover secrets inside Ancient Egyptian temples, interrogate pirates during the Golden Age of Piracy, and track outlaws across the Wild West. Same deduction system, new timelines and locations to untangle.

New twists, same core system. Brand-new cases that build on the original Murdoku rules.
Even richer art. More detailed scenes, more objects and more visual clues packed into each grid.
Jump in with Book 2. Designed so you can start here even if you haven’t played Book 1.

Back in Time is out now. Grab your copy today!

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Coming soon

Murdoku: Around the World

Coming October 27, 2026 in the US and Canada. Pre-order now.

Publisher Union Square & Co. (US) · Penguin Michael Joseph (UK)

In Around the World, your solving skills have earned you international acclaim. 80 new cases send you to investigate on every continent, Antarctica included: Paris, Monaco, Kyoto, Fiji, Arusha and many more stops on a world tour of crime scenes.

New: multi-grid cases. For the first time, a single case can span several locations, with clues and suspects spread across more than one grid.
Seven continents. 80 destinations. Every puzzle takes you somewhere new.
Jump in with Book 3. Designed so you can start here even if you haven’t played Books 1 or 2.

Also available soon in other countries.

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