The September Edit: Mystery & Thrillers

Horror | Fantasy & Science Fiction | Literary Fiction | Mystery & Thrillers | Nonfiction | Matthew’s Book Corner

The Silent Appeal

Janice Hallett

September 1, 2026

From “modern Agatha Christie” (The Sunday Times, London) Janice Hallett, a follow-up to her blockbuster novel The Appeal, featuring the Fairway Players as they find themselves embroiled in murder, blackmail, and betrayal as they mount their latest theatrical production.

Welcome back to Lower Lockwood. The Fairway Players return with Sarah-Jane and Kevin MacDonald as committee cochairs. This year, they have chosen to stage Agatha Christie’s The Hollow. But auditions aren’t their only problem: Sarah-Jane’s sister, Nicky-Rose, is suddenly back in town under mysterious circumstances, having sold her home in Barbados, left her business providing entertainment on cruise ships, and moved back into their mother Carol’s house.

As always, they’re short on men, and new Player Fran Elroy-Jones enlists a young married couple and the husband’s cousin to join. But no one wants to play the part of the hated Gerda, leaving Kevin and Sarah-Jane with no option but to reach out to an old member they know would be happy to perform in any role.

As with any production, tensions run high, and our intrepid lawyers Femi and Charlotte are tasked with uncovering exactly what happened on the opening night of The Hollow—and whether the correct person has taken the blame.

Murder on the Upper East Side

Gigi Waldorf

September 8, 2026

Scandal never graduates. Holly Jackson meets Gossip Girl in this glossy thriller, set in the glamorous world of New York’s ultra-elite.

Deliciously scandalous and impossible to put down, Murder on the Upper East Side serves up a deadly amount of drama. With all the addictive gossip, glamour, and messy betrayals of Gossip Girl, this murder mystery will keep you guessing until the very last page’ Emma Simmerman, author of Here Lie All the Boys Who Broke My Heart

2016. Hannah Miller has begun her senior year at The Prescott Academy of New York alongside the rich and famous of the Upper East Side. Or at least, their children.

Among the trust funds and penthouse parties, there’s one rule for survival: staying out of the way of Queen Bees Madison DuPont and Elle Harrington.

For Hannah, being a scholarship student makes her feel invisible. But nobody can escape the watchful eye of notorious gossip account The Upper Edge.

2026. The Academy’s alumni have gathered for a glittering charity gala. Only Madison DuPont could host an event this grand. But what starts as a champagne-fueled party soon descends into chaos when Madison is found dead moments after her speech.

It doesn’t take long for fingers to point at Hannah – everyone saw her talking to Madison only moments before she died. She shouldn’t even be at the gala. She’s not really one of them. But the truth is that everyone had a reason to want Madison dead.

To clear her name, Hannah must unearth the secrets that this crowd would kill to keep buried.

We Chase Shadows

Richard Osman

September 15, 2026

#1 New York Times bestselling author Richard Osman’s globe-trotting series “We Solve Murders” returns with the thrilling new mystery, We Chase Shadows.

Back together.
Back on the case.
And back to solving murders . . .

At sunrise, high in the Italian hills, a body is found on the steps of a beautiful private villa. On the body is a threatening note, signed by a mystery man.

Back at We Solve Murders HQ, Amy, Rosie, and Steve leap at the chance to take on their first proper case. So what if their new client seems to have his own reasons for avoiding the police? All they need to do is uncover who left the note, and then find them. Simple.

But once they start digging, the suspects keep piling up: there’s Sweden’s most-wanted criminal, a canny ex-wife and a fierce business rival – yet the murderer keeps evading them. And as the trio chase a villain through the shadows, danger travels closer to home . . .

Between Italy and Palm Springs, via Barcelona and Steve’s village pub, can the team catch an elusive killer who knows EXACTLY where to hide?

Lucy Kline, Necromancer

Tom O’Donnell

September 22, 2026

For fans of Buffy the Vampire Slayer and highly bingeable thrillers, Lucy Kline, Necromancer, is a Nancy Drew-style murder mystery mixed with the occult.

It’s been two years since Lucy’s twin sister was presumed dead. As the only person who knew about Louisa’s plan to sneak out on the night she was killed, Lucy still feels responsible for her sister’s grim fate—despite the fact that it was Lucy who eventually cracked the case, putting Louisa’s killer in jail.

Or so she thought.

When another girl who looks just like Louisa goes missing under similarly mysterious circumstances, and ghostly dreams begin to plague Lucy, she throws herself back into the investigation. The more clues she uncovers, the more her nightmares bleed into reality. And signs start to point to the impossible: necromancy.

With the help of her classmate Howie and a retired medieval history professor, Lucy must find the culprit behind these disappearances and finally come to terms with the grief that’s haunted her for years.

The Ghost and the Dead Librarian

Cleo Coyle

September 29, 2026

As a young widow, Penelope moved back to her quaint Rhode Island town to give her young son a safer home and her aunt’s dying bookshop new life. Using her late husband’s insurance money, Pen polished the store into a local treasure. But her updates did more than attract new customers. They roused a dead private eye from his big sleep. 

With Pen’s affection for hardboiled detective stories, it’s no surprise she’s developed a fondness for the wisecracking yet oddly likeable spirit. Sure, Jack’s cold spots are exasperating, along with his proclivity for putting noir fiction in the cozy section. But murder was Jack’s business in life, and his PI skills come in awfully handy when the body of an eccentric librarian is found amid the bookshop’s aisles. 

For years, Dory jokingly called herself “The Dead Librarian” because of her hobby of collecting and writing local obituaries. Now, in death, she’s discovered with her own eerily pre-written obit. Was it a suicide note? Jack and Pen say no and their certainty takes them from a ghost town’s ancient cemetery to a posh Newport mansion. When another body drops, a mysterious stranger makes Pen a shocking offer, one that may change her life—and Jack’s afterlife. But unless Jack can help Pen prove who “checked out” the librarian, a ruthless killer may close the book on her. 

The Enigmatic Madam Ingram

Meihan Boey

September 8, 2026

Miss Cassidy returns to nineteenth-century Singapore to help solve another dazzling supernatural mystery in this follow-up to the award-winning novel that The Guardian called a “classic-in-waiting.”

When Letty Ingram arrives in Singapore in 1906, she is an enigma even unto herself. To the residents of the small Scottish village where she lives, she is a wealthy, half-Malay recluse who emerges from her home only for walks with her great beast of a hound. To Letty, she is a woman trying to lift a curse that causes her lose consciousness and wake up in strange places—sometimes, with blood on her hands—and no memory of what occurred.

Letty has traveled across the world in hopes that the renowned medium Madam Kay can help her break the curse, but Letty is a mystery of tangled magics the likes of which Madam Kay and the rest of her supernaturally gifted family have never seen. Fortunately, the Kays know an expert with even more insight into otherworldly matters than they do: the formidable Miss Leda Cassidy.

But even Miss Cassidy finds Letty to be a puzzle, one that pulls a fog over her memories as well. As she dives deeper into Letty’s past and find it unexpectedly intertwined with her own, Miss Cassidy begins to realize that if she’s going to free Letty from her curse, she’s going to have to take on an ancient foe: the terrifying jungle spirit known as the Bungadarah.