Cozy mystery new releases for September! And with that, we’re in the -BER months. It’s the coziest time of the year – are you ready? And of course, we’re also heading into the busy publishing season – are you ready?
I only include new release titles I find on NetGalley, in author/publisher newsletters or Instagram accounts, or from emails/DMs from the authors. This method means I probably leave out many great books (sorry!) but it saves me a lot of time doing it this way, so I hope you’ll understand.
If you have a book coming out and want to be included, reach me on social media (@bookfrolic on Instagram or Bluesky) or via email at stephanie@bookfrolic.com. If you spot any cozy mysteries that were left out of my list, feel free to leave a comment and I’ll update the post!
Leave a comment and let me know which books you’ll be reaching for this month!
If you’ve found this list useful, please consider supporting my blog with a tiny donation! It takes me several hours to put together a list like this and since I do not have ads or affiliate links on this site, every bit of your donation gets put right back into the cost of running this blog (web hosting, domain fees, etc). Thank you so much! ~ Stephanie x
Book info, including release date, was correct at time of posting, but may change at any time.
SEPTEMBER 1-6, 2026
SEPTEMBER 1
- An A-List for Murder (Evelyn Book 2) by Amy Patricia Meade
- Evil Ways (Country Club Murders Book 21) by Julie Mulhern
- Familiars and Foul Play (Crones of a Feather Book 5) by Beth Dolgner
- Murder in Act One (Mimi Jones Mystery) by Joanne McLaughlin
- Murder in St. James Park (Lady Worthing Book 4) by Vanessa Riley
- Murder, Plainly Written (Plain Order Ink Society Book 1) by Mindy Steele – first in a new series!
- Murders in the Marquee (Murder Most Fowl Book 1) by Dana Mentink – first book in a new series!
- No Bones About It (Northwoods Mysteries Book 5) by Annie McEwen
- The Country House Murders (Polly Hope Book 1) by Friday Turner – first in a new series!
- The Oxford Guide to Scandal and Lies (Oxford Guide Book 1) by Kate Westbury – first in a new series!
- The Silent Appeal (The Appeal Series Book 2) by Janice Hallett
- The Soufflé Also Rises (Lizi Cleverly Midlife Badass Detective Book 1) by Lauren Johnson – first in a new series!
SEPTEMBER 2
- Possessed by Murder (Suddenly Psychic Book 2) by JP Bird
SEPTEMBER 3
- A Book Club’s Guide To Murder (Sugar Hollow Book 2) by Nancy Robards Thompson
- Sugar and Spies (Pugs Cozy Mystery Book 2) by Amanda Sterczyk
- The Fish and Chip Shop Detectives and a Mystery at Sea (The Fish and Chip Shop Detective Agency Book 3) by Jenny Kane
- The Last Telegram of Mrs Hudson (Lady Holmes and Hudson Investigator Book 1) by Mattea Orr – first in a new series!
- The Man with the Golden Bun (Baker’s Spy Book 4) by Adelaide Mills
SEPTEMBER 4
- Treasures and Treachery in Tenerife (Treasured Journey Book 4) by Victoria Tait
SEPTEMBER 7-13, 2026
SEPTEMBER 7
- Madame Pompette Helps the Haunted (Madame Pompette’s Tea Shop Book 8) by Libby Castle
SEPTEMBER 8
- Believer (Prairie Nightingale Book 3) by Ruthie Knox & Annie Mare
- Essentials of Homicide (Aromatherapy Apothecary Book 3) by Kim Davis
- Huckleberry I Scream (Fran Lightfoot Book 2) by Cindy Keen Reynders
- In the Midnight Hour (Only Murders in the Square Book 1) by Darcy Burke – first in a new series!
- Multitasking Murder (Merry Wrath Book 40) by Leslie Langtry
- Murder at the Faust (Sydney Lockhart Book 7) by Kathleen Kaska
- Murder at the Pumpkin Patch (Tails of Maple Ridge Book 3) by Ellie Webster
- Murder in the Vineyard (Maybridge Book 4) by Liz Fielding
- The Alchemist of All Hallows Eve (Accidental Alchemist Book 10) by Gigi Pandian
- The Mystic and the Missing Girl by Vikki VanSickle
- Tis the Season to Be Scary (Year-Round Christmas Book 9) by Vicki Delany
SEPTEMBER 9
- Curses and Classics (Agnes Hale Book Club Book 3) by Diana Xarissa
- Killer on the Kelvin Explorer (Milverton Mysteries Book 5) by GB Ralph
SEPTEMBER 14-20, 2026
SEPTEMBER 14
- A Midnight Murder (Malvern Mysteries Book 8) by Kate Wells
- Death By Mail (Josiah Reynolds Book 23) by Abigail Keam
- The Ghost Moon Tide (Manatee Bay Book 2) by Taffy Beach
SEPTEMBER 15
- A Field Guide to Death and Deceit (Harry & Emma Book 2) by Michelle L. Cullen
- Killer Kitsch (Highland Mysteries Book 5) by Joana Snowdon
- Lurleen’s Tale of Love and Murder (Ditie Brown Book 9) by Sarah Osborne
- Murder at Honeysuckle Harbour (Daisy Turner Vet Detective Book 1) by Julie Haworth – first in a new series!
- Murder Ties the Knot (Gertie Johnson Book 4) by Deb Baker
- The Big Cats Dance Party (No. 1 Ladies’ Detective Agency Book 27) by Alexander McCall Smith
- The Thief and the Labyrinth (World’s End Bureau Book 6) by Alys Clare
- We Chase Shadows (We Solve Murders Book 2) by Richard Osman
SEPTEMBER 16
- Holmes Away from Home (Althea Adler Book 1) by Samantha Larsen – first in a new series!
SEPTEMBER 17
- The Bone Charm (Haunted Ranch Book 8) by Sara Bourgeois
- The Vineyard Murder (French Village Mystery Book 4) by Greg Mosse
SEPTEMBER 18
- A Spell for Second Chances (Hemlock Hollow Book 2) by Tara Lush
- Murder at Speaker’s House (Westminster Mysteries Book 3) by Sarah Lustig
SEPTEMBER 20
- Lexi Cherry Is Dead by Jo Mallory
SEPTEMBER 21-27, 2026
SEPTEMBER 22
- A Killer for Christmas by Kim Harrington
- A Lighthouse Legacy (Guideposts’ Gift Shop Book 5) by Jo James
- A Map to Murder (Serial Killer Guide to San Francisco Book 3) by Michelle Chouinard
- Antiques Web (Trash ‘n’ Treasures Book 20) by Barbara Allan
- Eat, Drink, and Get Buried (Coffeehouse Mystery Book 22) by Cleo Coyle
- Murder at the Grand Alpine Hotel by Lucy Foley
- Murder at the Manor House (Julia Bird Book 10) by Katie Gayle
- Murder on the Sacred River (Lady Emily Book 20) by Tasha Alexander
SEPTEMBER 23
- Legacies, Lies & Murder (Prentiss & Parker Book 1) by Kathy Manos Penn – first in a new series!
SEPTEMBER 24
- Haunted Harvest (Hawthorne Corner Book 9) by Sharon Michaels
- The Cornish Halloween Murder (Nosey Parker Book 11) by Fiona Leitch
SEPTEMBER 26
- Choices in Cinque Terre (Wandering Wok Book 8) by Christina Crane
- The Case of the Christie Honeymoon Murder 9 (Detection Club Book 5) by Kelly Oliver
SEPTEMBER 28-30, 2026
SEPTEMBER 29
- A Christmas Guide to Family and Murder (Countess of Harleigh Book 9) by Dianne Freeman
- A Critical Conjunction (Booktown Book 20) by Lorna Barret
- A Game of Cat and Killer (Casebooks of Mikeneko Holmes Book 1) by Jiro Akagawa, translated by Haydn Trowell – first in a new series!
- Coastal Vendetta (Myrtle Beach Mystery Book 10) by Caleb Wygal
- Cook Off Killer (Soss Sisters Book 1) by Alix Sloan – first in a new series!
- Countdown to Christmas Murder (Lucy Stone Book 32) by Leslie Meier
- Death of a Grill Master (Hayley Powell Book 19) by Lee Hollis
- Haunted Hula-ween (Aloha Lagoon Book 27) by Sally J. Smith
- Mrs. Claus and the Fatal Figgy Pudding (Mrs. Claus Mystery Book 7) by Liz Ireland
- Murder on Threadneedle Street (Wrexford & Sloane Book 10) by Andrea Penrose
- Peg and Rose Deck the Halls (Senior Sleuths Book 4) by Laurien Berenson
- The Ghost and the Dead Librarian (Haunted Bookshop Detective Book 1) by Cleo Coyle – first in a new series!
- The Pumpkin Vice Cafe (Bakeshop Mystery Book 23) by Ellie Alexander
- The Vanished Sister (Lady Sherlock Book 9) by Sherry Thomas
SEPTEMBER 30
- A Wedding Date with Death (Campervan Detective Book 2) by Maeve Haran
- Bones and Brews (Witches of Willowbark Book 8) by Allie Katt & Tasha Oakwood
- Murder at Bramhurst Art Class (Canterbury Mystery Book 4) by Izzie Harper
