DEVILS AT THE DOOR

A suspicious drowning throws New York State senior investigator Shana Merchant’s life into turmoil in this taut, thrilling small-town mystery – perfect for fans of Agatha Christie and Ruth Ware.

Sixteen-year-old Henrietta used to be happy. But that was before her family hit the national news. Before she – and the whole world – knew she was related to one of New York’s most prolific serial killers.

Senior Investigator Shana Merchant readily agrees when her brother asks her to take in his troubled, rebellious daughter for the fall semester. Doug’s convinced that spending a few months in Alexandria Bay with Shana will straighten Hen out.

But when Hen arrives, Shana’s not so sure. She can’t help but distrust the strange and manipulative teen, who binge-watches bloody movies and roams the house at night, taking things that aren’t hers.

Soon, though, Shana has more to worry about than missing heirlooms when she’s called to investigate the suspicious drowning of a local teenager, only to discover her niece at the scene of the crime.

What happened that night on the dark, uninhabited island of Devil’s Oven? With Hen and her new friends not talking, and a community determined to keep their secrets dead and buried, Shana knows it’s a race against time to uncover the truth before her niece is upgraded from key witness to prime suspect.

Coming in paperback August 27th and available for preorder now

What People Are Saying

"An extremely well-written crime novel…Fans of the series will not be disappointed.”

— Booklist

"I love sitting down with one of Tessa Wegert's books, because I know I'm going to enjoy the next few hours! The Shana Merchant series just gets better and better, and I love diving into Shana's latest case. Devils at the Door is a compelling, unique mystery with twists I never saw coming. I couldn't put it down."

— Samantha Downing, bestselling author of My Lovely Wife

"A taut, atmospheric and compulsive thriller that had me gripped as every secret unravelled and the investigation reached its compelling conclusion."

Nadine Matheson, author of The Jigsaw Man

"Chilling…Wegert expertly renders Merchant’s quandary, ratcheting up the personal and professional stakes."

— Publishers Weekly

"A tale whose secrets keep getting more and more devastating.”

— Kirkus Reviews

“There's nothing scarier than a troubled teenager in Tessa Wegert's stellar new Shana Merchant thriller. I loved spending time with Shana and Tim and their neighbors and trying — but failing — to guess the solution to this twisty mystery.”

— Sarah Stewart Taylor, author of the Maggie D'arcy mysteries

"Tessa Wegert peels back the layers of Shana's unnerving backstory and very real self-doubt while delivering an explosive small town mystery filled with delicious and deadly secrets. I read this one on a six-hour flight and now I'm ready for Shana's next chapter. Write faster, Tessa.”

— Darby Kane, #1 international bestselling author of The Engagement Party

"My favorite Shana Merchant book yet and I’ve loved them all! Tessa Wegert once again demonstrates her immense talent for creating a taut, gripping mystery filled with unexpected twists and turns.”

— Elise Hart Kipness, author of Lights Out

Devils at the Door is available now

Leave a review on

"Tessa Wegert knocked it out of the park with the 5th in her Shana Merchant series. I loved it! It’s twisty, scary, has some awesome spooky vibes, and Shana continues to be a protagonist with moxie and intelligence, making her a delight to spend a few hours with. 10/10 recommend!” — Samantha S.