9 Stellar New Mystery and Thriller Books Coming in August 2025

Georgia Cartwright was adopted as a newborn into a wealthy family. So, when she murders her adopted sister, it’s the Crime of the Decade to anyone watching.

She’s sent to a lockdown psychiatric institution with the worst violent offenders as she waits trial. There, she only receives one visitor—her estranged twin sister, Amanda.

Georgia pleads her innocence and begs Amanda to help her. Amanda wants to help, but the more she learns the less sure she becomes.

Is her sister the victim of a depraved and powerful family? Or is a master manipulator luring Amanda into her web of lies?

North Falls is the kind of town where everyone knows everything about everyone. The kind of town where nothing bad happens. At least, it was.

Before the fireworks can happen, two teenage girls go missing.

Officer Emmy Clifton can’t walk away from the case. Her best friend's daughter was one of those girls. She asked for help, and Emmy turned her away. Now, she has to bring her home.

But the more Emmy investigates, the more secrets she reveals. Maybe she didn’t know the teenage girls as well as she thought. In fact, maybe no one did.

Lottie Jones left her old life behind her decades ago. She changed her name, moved to a small town, and started fresh. Or so she thought.

When an investigative journalist shows up on her doorstep asking questions about Lottie’s connection to a series of unsolved crimes, her past is suddenly too close for comfort. It’s hard enough getting away with murder when you’re young.

And when someone else knocks on her door, it just might be the end for Lottie.

When a student is found strangled near a small town college campus, police are baffled.

After all, the victim is posed as Ophelia from one of Shakespeare’s most famous scenes. It takes an awkward literature professor accidentally seeing—and solving—the clue.

When a second murder occurs, Emma Reilly realizes a killer is bringing her beloved books to grisly life. But when the third murder is a student from one of Emma’s classes, she realizes her safe life might be nothing more than an illusion.

And if she can’t help police find a killer, it just might end entirely.

Twenty-two years ago, Claire Campbell’s older sister Natalie vanished just days after she turned eighteen. There was an arrest and a conviction. Everything tied up quickly and neatly.

All she wants is to forget and move on. But a family emergency pulls her back.

When she gets a job at a nearby farm, she thinks it’s the perfect place to spend her summer. Until she accidentally finds an old diary.

What starts as a story of young love quickly turns dark as it reveals an array of unsolved crimes. And the deeper she gets, the more she can’t shake the feeling that her sister’s disappearance is somehow connected.

Halley James’ life is falling apart. Her marriage is over. Her career might follow. And now her dad needs emergency surgery.

But when she accidentally learns that her mother did not die in a car accident, her world threatens to unravel.

And even worse: her father’s been lying to her for her entire life. Desperate for the truth, Halley heads to Brockville, Tennessee, a small town that promises answers.

Only beneath the idyllic utopia, a darkness lurks. And if Halley isn’t careful, it just might swallow her whole.

It all started when they joined the CIA. It might end with them bloody, bruised, and handcuffed in the dark.

They have no idea where they are, how they got there, who has them, or why.

All they know is that after ten years of being rivals, ten years of secrets and lies, covers and chemistry, they now have to work together if they want to stay alive.

They’ve managed to stay alive through far worse, but falling in love just might kill them.

Frost, Morgan, and Nell are the Queen Bees of downtown Manhattan. They’re wealthy, gorgeous, their kids go to the most elite school, and their social lives revolve around theme parties.

But when a new mom named Sophia joins their group, bad things start happening to all of them.

Is it what Morgan describes as a “negative event cluster”? Or is it more than that?

It’s an eventful fall for these socialite moms, all leading to a Surrealist New Year’s Eve ball and one possible murder.

TV reporter Jolene Garcia just won an Emmy. Now, she is more determined than ever to cover stories that matter to her Phoenix community.

When a beloved small business owner dies, Jolene isn’t sure it’s an accident.

Especially when she discovers that he was asking questions that powerful people would rather stay unanswered. This could be the biggest story of her career.

That’s why her bosses want her to drop it. It’s also exactly why she won’t.