- Malarkey
- Malatraix
- Malevolent
- Malice
- Malice Archaeological
- Malice at the Palace
- MALICE IN MALMÖ
- Malice in Mexico, the fifth Claire Gulliver Mystery
- Malice in Miniature
- Malice in Morro Bay
- Malice In Wonderland
- Malice, Remorse and a Rocking Horse
- Malicious Desires
- Malicious Desires a Sam Parker Mystery
- Malicious Mischief
- Malled to Death
- Mallets Aforethought
- Mallorquinische Leiche zum Sa Rua
- Malltown
- Maltese Vulture Murder
- Malù si annoia
- Mama Cracks a Mask of Innocence
- Mama Pursues Murderous Shadows
- Mama Rocks the Empty Cradle
- Mama Stalks the Past
- Mama's Boys Need Not Apply
- Mammon In Malmö
- Manchmal muss es eben Mord sein
- Mandating Malice
- Mandy Dru Mysteries
- Manes and Murder
- Manga and Murder
- Mangled
- MANGO
- Mango Cake and Murder
- Mango, Mambo, and Murder
- Manhattan
- Manhattan in Miniature
- Manhattan Is My Beat
- Maniobra de evasión
- Maniobra de evasión - Episodio 1
- Maniobra de evasión - Episodio 1 y 2
- Maniobra de evasión - Episodio 3
- Maniobra de evasión - Episodio 4
- Maniobra de evasión - Episodio 5
- Maniobra de evasión - Episodio 6
- Manly Murders
- Manna from Hades
- Mannen från Thule
- Mannequin Murders
- Manners and Monsters
- Manor of Death
- Manor of Dying
- Manque (Les Enquêtes de Riley Page – Tome 16)
- Mansions of the Dead
- Mantrap
- Map Skills Murder
- Maple Leaf Hunter
- Maple Mayhem
- Mapped Out Murders
- Maquette for Murder
- Marathon Nightmare
- March Street Mayhem
- March Street Mischief
- March Street Murder
- Marche ou greffe !
- Mare's Nest
- Margaret Dashwood's Diary
- Margaritas, Marzipan, and Murder
- Maria Viani e le ombre del '68
- Mariage chimique
- Mariah Is Missing
- Marie spiegelt sich
- Marie's Quest for Love & Happiness
- Marigolds and Murder
- Marigolds for Malice
- Marigolds for Mourning
- Marigolds...Morning Glories...Murder
- Marinade for Murder: A Hemlock Falls Mystery
- Marinating in Murder
- Mariner's Compass
- Marital Hex
- Mariti Nel Mirino (Un Mistero di Riley Paige—Libro 13)
- Mark of the Lion
- Marked by Hell
- Marked Down for Murder
- Marriage & Murder
- Marriage and Mayhem (A Lexie Starr Mystery, Book 7)
- Marriage Can Be Mischief
- Marriage Vow Murder
- Marriage, Merlot & Murder
- Married on a Wicked Morning
- Married To Murder
- Marry Christmas Murder
- Marry-Go-Round
- Mars Cannon Box Set
- Marsh Owl: TCPI 6
- Marshmallow Malice
- Marshmallow S'More Murder
- Marti Keller Mysteries Box Set #1 Books 1-3
- Martina oder Jan-Kees verliert seinen Kopf
- Martini Dirty (Un giallo di Ruby Steele – Libro 2)
- Martini Regrets
- Marvatten
- Mary Had A Little Scam
- Mary Linn, Gravestone Hunter
- Mary Louise (Serapis Classics)
- Mary MacDougall Mysteries Box Set
- Mary-Alice Moves In
- Marybeth, Hollister & Jane
- Marée blanche
- Mascots Are Murder
- Mask of Sanity
- Masked Ball at Broxley Manor
- Masked in Paradise: A Destination Death Mystery
- Masking for Trouble
- Masquerade Murder
- Masquerade on the Net
- Masques and Murder — Death at the Opera 2-Book Bundle
- Masques de terreur à Lanmeur
- Massacre
- Massacre and Margins
- Master of Illusion: A Celine Skye Psychic Mystery
- Master of Souls
- Mastiffs, Mystery, and Murder
- Match
- 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
- Mater familias (Un caso de Flavia Albia, investigadora romana 3)
- Materia Prima
- Material Witness
- Mathewson Media Box Set: The First Five Anna Harris Novels
- Mathilde et ses mitaines
- Matin blême à Rosporden
- Matin rouge au Guilvinec
- Matters Arising from the Identification of the Body
- Matty Cruz Adventures 1,2,3 (Matty Cruz Adventures, Book 1)
- Maturato per sedurre (Un Giallo Intimo tra i Vigneti della Toscana—Libro 4)
- Maud, Here
- Mavis Hambledon Investigates The Missing Neighbour
- Max Starr Series: 5-Book Bundle
- Maxima culpa
- Maximum
- Maximum Bob
- Maximum Exposure