Rally ’Round the Corpse (2012)
APA: Toured to Death (2015)

Dearly Departed (2016)

Death on the Patagonian Express (2016)

Mr. Monk Helps Himself (2013)

Mr. Monk Gets on Board (2014)

Mr. Monk Is Open for Business (2014)

Mr. Monk and the New Lieutenant (2015)

Almost Perfect Crimes: Mini-Mysteries for You To Solve (1995)

Whodunit — You Decide!: Mini-Mysteries for You To Solve (1996)

Almost Perfect Murders: Mini-Mysteries for You To Solve (1997)

Solve-It-Yourself Mysteries: Detective Club Puzzlers (1997) [written with Bob Peterson]

The Little Giant Book of Whodunits? (1998) [written with Matt LaFleur]

Whodunit Crime Puzzles¹ (2002)

Whodunit Crime Mysteries¹ (2003)

Classic Whodunits (2003) [written with Stanley Smith, Tom Bullimore, Derrick Niederman & Tatjana Mai-Wyss]

Mensa Whodunits (2004) [written with Bob Peterson & Bill Wise]

Historical Whodunits (2005)

Kids’ Whodunits: Catch the Clues!² (2007)

Kids’ Whodunits 2: Crack the Cases!² (2009)

Whodunits (2011) [written with Tom Bullimore , Stan Smith & Derrick Niederman]