- Master Zacharus
- Master's Mates
- Masterclass
- Masterful Malice
- Masterless Warrior
- Masterminds: A Retrieval Artist Novel
- Masterpiece
- Masterpieces of Edgar Allan Poe
- Masterpieces of Mystery
- Masterpieces of Mystery Detective
- Masterpieces of Mystery: Detective Stories
- Masterpieces of Mystery: Mystic-Humorous Stories
- Masterpieces of Mystery: Mystic-Humorous Stories, Ghost Stories, Riddle Stories and Detective Storie...
- Masterpieces of Mystery: Riddle Stories
- Masterpieces of Mystic-Humorous
- Masterplan
- Masters of Blood and Bone
- Masters Of Fire
- Masters of Illusion
- Masters of Our Fate
- Masters of Prose - Arthur Conan Doyle
- Masters of the House
- Mastery of Darkness
- Masthead
- Mastiff Security: Complete Volume One
- Mastiffs, Mystery, and Murder
- Mata Hari Squad
- Mata para mí (Familia Vartanian 3)
- Matador
- Matalaspenas
- Matanzas
- Matar a Leonardo da Vinci (Crónicas del Renacimiento 1)
- Matar a papá
- Matar al padre
- Matar cabrones
- Matar y Correr
- Matar y guardar la ropa
- Matarte lentamente
- Match
- Matching Miriam
- Matchmaker Mysteries Books 1 & 2
- Matchmaker Mysteries: Books 1-4
- Matchmaker Mysteries: Books 11, Prequel, Advice
- Matchmaker Mysteries: Books 5 - 7
- Matchmaker Mysteries: Books 8 - 10
- Matchmaking Advice From Your Grandma Zelda (The Collection from the Matchmaker Mysteries)
- Matchmaking Can Be Murder
- Matchs nuls ou Transsiber 2.0
- Matchstick Men
- MatchUp
- Mated
- Mated By Two Tigers (Shifter Menage Romance)
- Matematiche certezze
- Mateo Falcone
- Mater familias (Un caso de Flavia Albia, investigadora romana 3)
- Materia grigia
- Materia strana
- Math Is Murder
- Mathematical intrigue in Buffalo
- Mathematical Kisses
- Mathematical Proof of Divine Creation and He Leads Mei Follow
- Mathewson Media Box Set: The First Five Anna Harris Novels
- Mathias: Boston 2009
- Mathilde
- Mathilde et ses mitaines
- Mathilde, A Woman of Circumstance
- Mathman Saves A Doomed Airliner
- Matilde debe morir
- Matilde decide vivir
- Matin blême à Rosporden
- Matin de cendre
- Matin rouge au Guilvinec
- Matinee
- Matinicus: An Island Mystery
- Matkustaja 23
- Matorni’s Vineyard
- Matricule 50820
- Matrimonial Causes
- Matrimonial Malice
- Matrimonio con pranzo "al Boschetto"
- Matrimony in Miniature
- Matrioska
- Matryoshka
- Matson's Case No. 3
- Matson’s Case No. 1
- Matson’s Case No. 2
- Matsumoto, O Guarda-Costas
- Matt and Kim
- Matt Bower Acts of Circumstance
- Matt Decker 2-Volume Box Set