Mystery/Thriller

Exciting New Mystery & Thriller Adaptations To Watch in May 2025

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Jamie Canaves

Contributing Editor

Jamie Canavés is the Tailored Book Recommendations coordinator and Unusual Suspects mystery newsletter writer — in case you’re wondering what you do with a Liberal Arts degree. She’s never met a beach she didn’t like, always says yes to dessert, loves ‘80s nostalgia, all forms of entertainment, and can hold a conversation using only gifs. You can always talk books with her on Bluesky, Litsy, Goodreads, and her substack Multitudes Contained.

Welcome to the May round of new mystery and thriller adaptations to watch! If you missed any of 2025’s past rounds, you can find January and February’s new adaptations here (which include true crime, Scam Goddess, and Black Warrant), March’s adaptations here (which include Jane Harper), and April’s adaptations here (which include Alex Dahl’s Playdate).

Before diving into May’s adaptations, I want to mention a few new releases that are sequels.

poster for Amazon Prime's The Better Sister
Image courtesy of Prime
cover image for The Better Sister

The Better Sister by Alafair Burke

Alafair Burke’s twisty domestic murder mystery is all the drama catnip for an adaptation. Chloe married her estranged sister’s ex-husband Adam, and now Adam has been murdered…

The eight episode thriller will stream on Prime Video on May 29th and stars Jessica Biel and Elizabeth Banks as the estranged sisters with Corey Stoll as Adam.

Watch the trailer here.

Netflix poster for Bet series
Image courtesy of Netflix
cover image for Kakegurui Vol. 1

Kakegurui (Compulsive Gambler, Vol. 1) by Homura Kawamoto, Toru Naomura (Illustrator), Matthew B. Alberts (Translator) (aoc)

The Japanese manga is set in an elite academy where the wealthiest people’s kids don’t focus so much on academia as they do on an underground gambling game.

Netflix’s 10 episode English-language live-action adaptation is titled Bet. It follows a transfer student, Yumeko, as she upends the school’s social hierarchy—created by the underground gambling game—on her quest for revenge.

Watch the trailer here.

Netflix Dept Q series
Image courtesy of Netflix
cover image for The Keeper of Lost Causes

The Keeper of Lost Causes (Department Q #1) by Jussi Adler-Olsen, Lisa Hartford (Translator)

The Department Q book series—written and translated by Jussi Adler-Olsen and Lisa Hartford—is a procedural series set in Copenhagen that starts with Carl Mørck being placed in charge of a new cold case unit (Department Q) as punishment.

The nine-episode series, which will premiere through Netflix worldwide on May 29th, sticks to the core of the series—Detective Carl Morck banished to a cold case unit —but moves the setting from Denmark to Scotland. Matthew Goode (A Discovery of Witches) stars as Morck, and at the helm of the adaptation (writing/directing) is Scott Frank, who was also behind The Queen’s Gambit adaptation.

Watch the trailer here.


Browse the books recommended in Unusual Suspects’ previous newsletters on this shelf. See upcoming 2025 releases, and mysteries from 2024 and 2023. Check out this Unusual Suspects Pinterest board and get Tailored Book Recommendations! Until next time, keep investigating! In the meantime, come talk books with me on Bluesky, Goodreads, Litsy, and Substack.

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