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- Mit dem Colt gegen alle: Western Großband 12/2020
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- Mostly Murder
- Mostly Murder: A Medley of Mayhem & Mystery
- Mother Gets a Lift
- Motherhood Is Murder
- Mouchards et Cie
- Mr. E In Cabin 187 (The Hudson Agency)
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- Mr. J. G. Reeder Collection: 5 Mystery Novels & 4 Detective Stories
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- MRS. RAFFLES and R. HOLMES & CO. – 20+ Stories of the Amateur Cracksman's Family
- MRS. RAFFLES and R. HOLMES & CO. – 20+ Tales of the Amateur Cracksman's Family
- Muerte, asesinato y mentira: Compilación de cuentos de Edgar Allan Poe
- Muerto Que Habla
- Murder & the Devil: 13: An Introduction and Vengeance
- Murder & the Devil: 2: Murderous Justice
- Murder & the Devil: 3: Lisa and the Strange Gypsy
- Murder & the Devil: 5: First Pain and the Business Begins
- Murder & the Devil: 7: Letter to Maslak and Sandra Magg
- Murder & the Devil: 8: The Journey to Leningrad and Rapant
- Murder Aboard the Titanic: A Mystery At Sea Short
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- Murder By Design Complete Series: Books 1-7
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- Murder in Key West 3
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- Murder in Key West 5
- Murder in Montauk: And Other Stories
- Murder in Paradise: The Kate on Vacation Cozy Mysteries Collection
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- Murder Mysteries Boxed-Set: 40+ Books in One Edition
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