- M for Murder
- M is for Malice
- M-ryhmä - Ojasta allikkoon
- M-ryhmä I
- M-ryhmä II
- M-ryhmä III
- M.I.A. - Das Schneekind
- M.O.E.
- M.T. Mystery, Box Set
- The Mommy Mysteries Collection #2
- Macaron Murder
- Macaroni and Freeze
- Macarons Can Be Murder
- Macarons of Love
- Macchiatos, Macarons, and Malice
- MacDeath
- Mace Of Spades
- Maceration
- Macho Man Murder
- Machtmotiv (Ein Avery Black Mystery – Band 4)
- Mackenzie White Mysterie Bundel: Voordat hij Doodt (#1) en Voordat hij Ziet (#2)
- Mackenzie White Mystery Bundle: Before he Covets (#3) and Before he Takes (#4)
- Mackenzie White Mystery Bundle: Before He Envies (#12) and Before He Stalks (#13)
- Mackenzie White Mystery Bundle: Before He Feels (#6) and Before He Sins (#7)
- Mackenzie White Mystery Bundle: Before He Hunts (#8) and Before He Preys (#9)
- Mackenzie White Mystery Bundle: Before he Kills (#1) and Before he Sees (#2)
- Mackenzie White Mystery Bundle: Before he Kills (#1), Before he Sees (#2) and Before he Covets (#3)
- Mackenzie White Mystery Bundle: Before He Lapses (#11) and Before He Envies (#12)
- Mackenzie White Mystery Bundle: Before He Longs (#10) and Before He Lapses (#11)
- Mackenzie White Mystery Bundle: Before He Needs (#5) and Before He Feels (#6)
- Mackenzie White Mystery Bundle: Before He Preys (#9) and Before He Longs (#10)
- Mackenzie White Mystery Bundle: Before he Sees (#2) and Before he Covets (#3)
- Mackenzie White Mystery Bundle: Before He Sins (#7) and Before He Hunts (#8)
- Mackenzie White Mystery Bundle: Before He Stalks (#13) and Before He Harms (#14)
- Mackenzie White Mystery Bundle: Before he Takes (#4) and Before he Needs (#5)
- Mackenzie White Mystery Bundle: Before He Takes (#4), Before He Needs (#5) and Before He Feels (#6)
- Mackenzie White Mystery Bundle: Bevor er Begehrt (#3) und Bevor er Nimmt (#4)
- Mackenzie White Mystery Bundle: Bevor er Braucht (#5) und Ehe Er Fühlt (#6)
- Mackenzie White Mystery Bundle: Bevor er Nimmt (#4) und Bevor er Braucht (#5)
- Mackenzie White Mystery Bundle: Bevor er Sieht (#2) und Bevor er Begehrt (#3)
- Mackenzie White Mystery Bundle: Bevor er Tötet (#1) und Bevor er Sieht (#2)
- Mackenzie White Mystery Bundle: Bevor er Tötet (#1), Bevor er Sieht (#2) und Bevor er Begehrt (#3)
- Mackenzie White Mystery Bundle: Ehe Er Fühlt (#6) und Ehe Er Sündigt (#7)
- MacPherson's Lament
- Macramé Murder
- MacTavish & Scott - Das rätselhafte Medaillon
- MacTavish & Scott - Der verschwundene Gärtner
- MacTavish & Scott - Ein Cupcake für den Mörder
- MacTavish & Scott - Eine verhängnisvolle Erpressung
- MacTavish & Scott - Gefährliche Lügen
- MacTavish & Scott - Tod eines Künstlers
- Macyn's Letter
- MAD AS BELL
- Mad Money Murder
- Mad, Bad and Blonde
- Madam, Will You Talk?
- Madame Bertin steht früh auf
- Madame Koska & le Spectre de la Rose
- Madame Koska & the Imperial Brooch
- Madame Le Commissaire e l'inglese scomparso
- Madame le Commissaire en de dood van de politiechef
- Madame le Commissaire en de uitgestelde wraak
- Madame le Commissaire en de verdwenen Engelsman
- Madame le Commissaire und das geheimnisvolle Bild
- Madame le Commissaire und der Tod des Polizeichefs
- Madame le Commissaire und der tote Liebhaber
- Madame le Commissaire und die Frau ohne Gedächtnis
- Madame le Commissaire und die panische Diva
- Madame le Commissaire und die späte Rache
- Madame le Commissaire und die tote Nonne
- Madame le Commissaire und die Villa der Frauen
- Madame Letrance mimt den Bodyguard
- Madame Midas
- Madame Storey
- Madame Storey Intervenes
- Madame Storey’s Way
- Maddie's Gift of Mystery
- Maddie's Recipe Of Mysteries
- Maddie's Thanksgiving Mystery
- Das dunkle Blut von Hamburg
- Made to Be Broken
- Made-up for Murder
- Madeleine Murder
- Madeleine Murder: A Seagrass Sweets Cozy Mystery
- Madeline's Jewel
- Mademoiselle Sherlock
- Madison Cruz Mysteries-Books 1-3
- Madrugada
- Maduro para el asesinato (Un misterio cozy en los viñedos de la Toscana—Libro 1)
- Maduro para la muerte (Un misterio cozy en los viñedos de la Toscana—Libro 2)
- Mae Q'West and the Sign of the Stars
- The Close
- Maggie for Hire
- Maggie Get Your Gun
- Maggie Goes Medieval
- Maggie Goes to Hollywood
- Maggie In Too Deep
- Maggie Needs An Alibi
- Maggie On The Edge
- Maggie Reloaded
- Maggie Sullivan Mysteries Books 1-4
- Maggie Sullivan Mysteries Books 5-7
- Maggie Takes A Fall
- Maggie's Mechanics
- Maggy Thorsen Mysteries Box Set 1-3
- Magia y muerte entre los enanos
- Magic Ain't a Game
- Magic and Macaroons
- Magic and Mayhem at Mistletoe Manor
- Magic and Mocha
- Magic and Vengeance
- Magic Awaken
- Magic for Liars
- Magic Island: A Paranormal Cozy Mystery Box Set, Books 1-4
- Magic Lies
- Magic Mirror
- Magic Thief
- Magic, Lies, and Deadly Pies
- Magic, Moonlight, and Murder
- Magical Cakes of Love
- Magick & Mayhem
- Magickal Mystery Lore
- Magis
- Magnolia Steele Mystery Box Set
- Magnolia Wild Vanishes (A Charmed Cat Mystery, Book 1)
- Magpie Lane
- Mahoney and Me
- Mai Tai One On
- Maid For Murder
- Maids of Misfortune: A Victorian San Francisco Mystery
- Maintenance is Murder
- Maisie Dobbs
- Maisie Dobbs Bundle #1, Pardonable Lies and Messenger of Truth
- Maisie Dobbs Bundle #2, An Incomplete Revenge and Among the Mad
- Maisie Dobbs Bundle #3: The Mapping of Love and Death and A Lesson in Secrets
- Maisie Dobbs Bundle #4: Elegy for Eddie and Leaving Everything Most Loved
- Major M. Roth Profilerin
- Major Vices
- Make Believe Murder
- Make Myself Just One More
- Make Them Pay
- Makeup and Murder
- Making a Change for the Stranger: Deb Powers, Otherworldly PI: Case #1
- Making Amends (Bookburners Season 3 Episode 8)
- Making Mischief
- Making Room at Christmas ( A Charlotte Diamond Mysteries Special)
- Maladaptation