I’m here to run down the New Mysteries and Thriller Books for August 2025! The summer is wrapping up with these sizzling new titles. Which of these New Mysteries, Thrillers, and Suspense Books for August 2025 are you going to love? Let’s find out!

New Mysteries and Thriller Books for August 2025

Table of Contents
- New August 2025 Mysteries and Thriller Books by Subgenre
- New August 2025 Mysteries and Thriller Books by Release Date
- New August 2025 Historical Mystery Books
This list will include mostly standalone titles, with a few books that are sequels or series installments for books I have reviewed before.
Some of these links are affiliate links, which means I may receive a small percentage of qualifying purchases.
Recommended August 2025 Mysteries and Thrillers by Subgenre:
- Cozy Mysteries: Mrs. Christie at the Mystery Guild Library, Marigold Cottages Murder Collective
- Psychological Thrillers: Last Seen, Locked Ward, Jenny Cooper Has a Secret
- Procedural Mysteries: Mississippi Blue 42, We All Are Guilty Here, Witch’s Orchard
- Political and Spy Thrillers: Departure 37, Sheepdog
- Paranormal: 13 Months Haunted
What were my favorites of August 2025?
The Marigold Cottages Murder Collective, if you love cozies and shows like Only Murders in the Building.
We Are All Guilty Here if you are up for a police procedural with some dark themes. It was amazing!
If you want a popcorn thriller page-turner, try The Devil’s Advocate.
New Mystery and Thriller Books for the Week of August 5 2025

Last Seen by J.T. Ellison
I read this one and it was…. interesting. I liked it but the end got weird.
My Readers Guide to Last Seen is here!

Devils’ Advocate by Steve Cavanagh
This is the re-release of book 6 out of 9 in the Eddie Flynn series. Because these books are being released out of order in the US, I am reading them out of order.
Dead Husband Cookbook by Danielle Valentine
Mississippi Blue 42 by Eli Cranor
Departure 37 by Scott Carson
Confession (Contempt 3) by Michael Cordell
Free on Kindle Unlimited, this is book three in a series of legal thrillers about a man who was jailed for a crime he didn’t commit.

Locked Ward by Sarah Pekkanen
I have enjoyed her books in the past, books like Gone Tonight. But this one was not my favorite.
Hollow Places by Victor Suthammanont (lawyer accused of killing his mistress)
Sheepdog by Elliot Ackerman (unlikely spies)
Jenny Cooper Has a Secret by Joy Fielding (woman meets elderly serial killer in a memory care facility)
New Mystery and Thriller Books for the Week of August 12

We Are Are Guilty Here by Karin Slaughter
Loved this! My Readers Guide to We Are All Guilty Here, with a full character list, spoilers, and the ending explained!

Too Old for This by Samantha Downing
This is another book in trend of retired assassins. It’s very darkly comic and I enjoyed it!
13 Months Haunted by Jimmy Juliano
An Evil Premise by T. Marie Vandelly
The Grand Paloma Resort by Cleyvis Natera
High Season by Katie Bishop
Peter Miles Has to Die by Katie Collum
If you love a good revenge story (or shows like Pretty Little Liars) this one is worth a try! Here are my thoughts on Goodreads!
Witch’s Orchard by Archer Sullivan
New Mystery and Thriller Books for the Week of August 19
Emma on Fire by James Patterson and Emily Raymond

Marigold Cottages Murder Collective by Jo Nichols
Loved this story of a murder in a vacation cottage community!
My Readers Guide to the Marigold Cottages Murder Collective!
Leverage by Arman Gowani
This is a financial thriller that was heavily promoted. Let me know if you try it!

One Dark Night by Hannah Richell
I loved Richell’s last book and really enjoyed this one as well.
My Readers Guide to One Dark Night!
The Manipulator by Dan Buzzetta
A lawyer is torn when in his new job as Attorney General, he is asked to bring down a crime ring with ties to his former law firm.
New Mystery and Thriller Books for the Week of August 25

Forget Me Not by Stacy Willingham
Early reviews this one are mixed, but I like her books and am trying it!
My Readers Guide to Forget Me Not. It’s not my favorite of her books, but some people really loved it!
The Break-In by Katherine Faulkner
The Surrogate Mother by Freida McFadden
This is a reissue of a self-published book.
Not Who You Think by Arbor Sloane

Mrs. Christie at the Mystery Guild Library by Amanda Chapman
This was a little wacky and all over the place for me. You can check out my Goodreads Review!
How Bad Can Things Get by Darcy Coates
This one is supposed to be horror, so I am passing!
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Want to see prior months’ lists of New Mysteries?
New Mysteries Coming Out in January 2025
New Mysteries Coming Out in February 2025
New Mysteries Coming Out in March 2025
New Mysteries Coming Out in April 2025
New Mysteries Coming Out in May 2025