The Casebooks
Murder-mystery logic puzzles where you are the detective, and cryptogram collections for armchair investigators. A growing collection, grouped by series.
Series
Full-size casebooks: 11,016 suspect records, 20 essential clues, one killer.
A Blackthorn Manor Murder-Mystery Logic Puzzle
11,016 guest records. 20 essential clues. One hidden killer. At 11:47 p.m., celebrated mystery writer Edmund Vale is found dead in the locked library of Blackthorn Manor. The official guest list has vanished into the fireplace—but the manor registry survived.
130 pages · Paperback
View on Amazon — The Missing Guest ListA Venetian Murder-Mystery Logic Puzzle
11,016 passengers. 66,096 coded details. 20 essential clues. One killer. At two minutes to midnight, a black gondola leaves the Palazzo Belladonna and disappears into the fog. When it reaches the Midnight Pier, the collector Aurelio Conti is dead beneath a velvet cloak. No one boarded.
130 pages · Paperback
View on Amazon — The Midnight GondolaA Night-Train Murder-Mystery Logic Puzzle
11,016 passenger records. 20 essential clues. One killer aboard the North Star Express. At 12:09 a.m., railway financier Sebastian Crowe is found dead inside locked Cabin Nine as the North Star Express crosses a mountain pass. The corridor is empty. The emergency brake has not been pulled.
130 pages · Paperback
View on Amazon — The Passenger in Cabin NineSeries
Halloween nights in the early 1930s. 11,016 suspects in every case.
An 11,016-Suspect Halloween Murder-Mystery Puzzle
The festival counted every guest. The killer erased one name. Halloween night, 1931. Festival director Ambrose Thorne is found dead beside the locked cashbox, the guest book torn apart, and the only road out of the valley blocked. Everyone who could have done it is still inside the gates.
186 pages · Paperback
View on Amazon — The Hollow Harvest CaseAn 11,016-Suspect Halloween Murder-Mystery Puzzle
The parade counted every guest. The killer erased one name. Halloween night, 1932. Hollowmere City's midnight parade stops beneath the clocktower with the final float still lit — and parade marshal Lucius Vale found dead inside the float's locked control compartment.
186 pages · Paperback
View on Amazon — The Midnight Parade CaseAn 11,016-Suspect Halloween Murder-Mystery Puzzle
Can you find the killer? The fair counted every ticket. The killer burned the master roll. At 12:13 a.m. on 1 November 1933, every ride at Hollowfair stopped at once. Treasurer Silas Bell was found dead inside the locked counting wagon. The master ticket roll had been fed through the furnace.
186 pages · Paperback
View on Amazon — The Last Ticket at Hollowfair CaseSeries
Cryptogram puzzle books for adults: crack the code, one letter at a time.
60 Real Case Files, Forensic Mysteries, and Coded Clues
Sixty cases are waiting. Can you decode the evidence? Step into the role of an armchair detective with 60 cryptogram puzzles inspired by real case files, forensic breakthroughs, coded communications, fingerprint evidence, DNA analysis, and the investigators who changed criminal history.
82 pages · Paperback
View on Amazon — True Crime Cryptograms72 Haunted Mysteries, Eerie Legends, Strange Evidence, and Coded Clues
Enter the shadows—if you dare. Halloween Cryptograms is a spooky puzzle book for adults who enjoy eerie folklore, haunted history, Gothic literature, strange evidence, and satisfying code-breaking challenges.
98 pages · Paperback
View on Amazon — Halloween Cryptograms72 Harvest Traditions, Holiday History, Food Facts, and Gratitude-Inspired Coded Clues
Cozy up with 72 Thanksgiving cryptograms filled with harvest traditions, fascinating holiday history, surprising food facts, and gratitude-inspired stories. Thanksgiving is more than one familiar story.
98 pages · Paperback
View on Amazon — Thanksgiving Cryptograms72 Holiday Traditions, Seasonal Stories, Christmas Trivia, and Coded Clues
Christmas is full of surprising stories—and every one is a code waiting to be cracked. Christmas Cryptograms: A Festive Puzzle Book for Adults combines satisfying code-breaking challenges with fascinating holiday history, traditions, foods, songs, and folklore from around the world.
98 pages · Paperback
View on Amazon — Christmas CryptogramsSeries
Interactive logic mysteries: follow the evidence and clear the wrongly accused.
An Interactive Murder Mystery Logic Puzzle
Julian Vale is guilty of plenty. Murder isn’t one of them. Adrian Cross is dead. Julian’s credential appears in the access records. His fingerprint is on the murder weapon. Blood is found in his car. Eleven witnesses heard him threaten the victim. The case looks closed. It isn’t.
198 pages · Paperback
View on Amazon — They’re Framing JulianAn Interactive Murder Mystery Logic Puzzle
360 suspects. 72 hours. One innocent woman. On the night of the Midwinter Sale, chief valuer Ambrose Hollis is found dead in the strongroom. Every point in the case against Clara Ashby is true as written, and on Thursday she will plead guilty. You have three days to prove she didn’t do it.
198 pages · Paperback
View on Amazon — Three Days to Save Clara
