- Mrs. Hudson Takes the Stage
- Mrs. Jeffries & the Mistletoe Mix-Up
- Mrs. Jeffries and the Alms of the Angel
- Mrs. Jeffries and the Best Laid Plans
- Mrs. Jeffries and the Feast of St. Stephen
- Mrs. Jeffries and the Merry Gentlemen
- Mrs. Jeffries and the Midwinter Murders
- Mrs. Jeffries and the Missing Alibi
- Mrs. Jeffries and the One Who Got Away
- Mrs. Jeffries and the Silent Knight
- Mrs. Jeffries and the Three Wise Women
- Mrs. Jeffries and the Yuletide Weddings
- Mrs. Jeffries Appeals the Verdict
- Mrs. Jeffries Defends Her Own
- Mrs. Jeffries Delivers the Goods
- Mrs. Jeffries Demands Justice
- Mrs. Jeffries Dusts for Clues
- Mrs. Jeffries Forges Ahead
- Mrs. Jeffries Holds the Trump
- Mrs. Jeffries in the Nick of Time
- Mrs. Jeffries on the Ball
- Mrs. Jeffries on the Trail
- Mrs. Jeffries Pinches the Post
- Mrs. Jeffries Plays the Cook
- Mrs. Jeffries Pleads Her Case
- Mrs. Jeffries Questions the Answer
- Mrs. Jeffries Reveals Her Art
- Mrs. Jeffries Rights a Wrong
- Mrs. Jeffries Rocks the Boat
- Mrs. Jeffries Speaks Her Mind
- Mrs. Jeffries Stalks the Hunter
- Mrs. Jeffries Stands Corrected
- Mrs. Jeffries Sweeps the Chimney
- Mrs. Jeffries Takes Stock
- Mrs. Jeffries Takes the Cake
- Mrs. Jeffries Takes the Stage
- Mrs. Jeffries Turns the Tide
- Mrs. Jeffries Weeds the Plot
- Mrs. Jeffries Wins the Prize
- Mrs. Lincoln's Dilemma
- Mrs. Malory and a Necessary End
- Mrs. Malory and A Time To Die
- Mrs. Malory and Death Is a Word
- Mrs. Malory and the Festival Murder
- Mrs. Miller kann's nicht lassen
- Mrs. Morris and the Ghost
- Mrs. Morris and the Ghost of Christmas Past
- Mrs. Morris and the Sorceress
- Mrs. Morris and the Vampire
- Mrs. Morris and the Witch
- Mrs. Pickles' Perilous Parting
- Mrs. Pollifax and the Hong Kong Buddha
- Mrs. Pollifax and the Second Thief
- Mrs. Pollifax and the Whirling Dervish
- Mrs. Pollifax on the China Station
- Mrs. Pollifax Unveiled
- 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
- Mrs. Roosevelt's Confidante
- Ms America and the Brouhaha on Broadway
- Ms America and the Mayhem in Miami
- Ms America and the Naughtiness in New Orleans
- Ms America and the Offing on Oahu
- Ms America and the Villainy in Vegas
- Ms America and the Whoopsie in Winona
- Ms Holmes: Baskerville
- Ms Holmes: The Alderley Edge Vampire
- Much Ado About Muffin
- Much Ado about Nauticaling
- Much Ado about Nutmeg
- Mucky Bumpkin
- Mud Blood
- Mud Run Murder
- Muddled Through
- Muddy Bayou
- Muddy Bites
- Muddy Mouth
- Muddy Waters
- Muerte en Cape Cod
- Muerte en Florencia
- Muerte en una Fiesta
- Muerte por polca
- Muffin But Murder
- Muffin But Trouble
- Muffin to Fear
- Muffins Masks Murder
- Mug Shot
- Mugs, Murder, and Mayfair
- Mujeres de la noche
- Mulberry Mischief
- Mulberry Wands
- Mulch
- Mulled Murder
- Mulled to Death
- Multiple Motives
- Multiple Motives, A Kate Huntington Mystery
- Multiple Personalities
- Mum's the Word
- Mumbo Gumbo Murder
- Mummenschanz
- Mummy B-Roll: The Hannah Chronicles
- Mummy Dearest
- Mummy’s Little Secret
- Mums and Mayhem
- Mundtot (Ein Ella-Dark-Thriller – Band 4)
- Munteres Morden
- Muori per me
- Murder & Mayhem - A Cryptic Cove Cozy Mystery - Book 1
- Murder & Menace (Cryptic Cove Cozy Mystery Series Book 2)
- Murder & Mimosas
- Murder & Mockery (Cryptic Cove Cozy Mystery Series Book 3)
- Murder & Spice
- Murder (and Baklava) (A European Voyage Cozy Mystery—Book 1)
- Murder a Cappella,
- Murder a la Mocha
- Murder A'la Mode
- Murder Aboard the Coast Starlight
- Murder Aboard the Mistletoe
- Murder Above the Fold
- Murder After a Fashion
- Murder Al Dente
- Murder Al Fresco
- Murder Alfresco
- Murder Always Barks Twice
- Murder Among Friends
- Murder Among Neighbors
- Murder Among Strangers
- Murder and Bitter Tea
- Murder and Gold
- Murder and Herbal Tea
- Murder and Ice Cream
- Murder and Magic at March House
- Murder and Mendelssohn
- Murder and Mint Tea
- Murder and Mischief In the Hamptons
- Murder and Moonshine
- Murder and Other Unnatural Disasters
- Murder and Plague
- Murder and Romance at Augustine Pine Golf Club: A Persephone and Potea Mystery
- Murder and Sweet Tea
- Murder and the Middle-Aged Cheerleaders
- Murder and the Scottish Play
- Murder Any Witch Way
- Murder as a Fine Art
- Murder as a Second Language
- Murder at an Irish Christmas
- Murder at Archly Manor
- Murder at Beaulieu Abbey
- Murder at Biscuit Village
- Murder at Blackburn Hall
- Murder at Blackwater Bend
- Murder at Cape Foulweather
- Murder at Chipmunk Lake
- Murder at Classy Kitchens
- Murder at Coconut Key
- Murder at Comfree Abbey
- Murder at Crossways
- Murder at Emerald Isle
- Murder at Five Finger Light
- Murder at Honeychurch Hall
- Murder at Hotel 1911
- Murder at Icicle Lodge
- Murder at Keyhaven Castle
- Murder at Kingscote
- Murder at Leisure Lakes
- Murder at Mabel's Motel
- Murder at Machu Picchu
- Murder at Magic Lake
- Murder at Mama Truckers Cafe
- Murder at MarketFresh
- Murder at Meadowlark
- Murder At Medley Park
- Murder at Merisham Lodge: Miss Hart and Miss Hunter Investigate: Book 1
- Murder at Metrolina