A burnt-out thriller writer desperate to regain his creative spark becomes intrigued by a decade-old unsolved murder at a glamorous Alpine hotel in this meticulously crafted novela matryoshka doll of a mystery built with the precision of a Swiss watchfrom the internationally bestselling author ofThe Truth About the Harry Quebert Affair.

Dicker salutes Agatha Christie even as he drops the reader through one trapdoor into another, so that by the end, we doubt weve ever read another novel quite like it. (We havent.) Fans of Ruth Ware and Lucy Foley will hug this book in between chapters; the many readers who love Anthony Horowitzs mysteries will celebrate. And me? Ill be reading it again.A. J. Finn, #1New York Timesbestselling author ofThe Woman in the Window

One December night, a corpse is found in Room 622 of the Hotel Verbier, a luxury resort in the Swiss Alps. An intense police investigation begins, yet few leads are found. Time passes, and without any breaks in the case, public interest wanes.

Years later, Jol Dicker, Switzerlands novelist extraordinaire, arrives at the Verbier to recover from a bad breakup, mourn the death of his longtime publisher, and hopefully begin a new novel. While trying to solve the puzzle of his next book, Jols expertise in the art of the thriller put to the test when he decides to play Sherlock Holmes and look into the hotels long-unsolved murder case. He finds his Watson in Scarlett, a beautiful aspiring novelist staying in the next room, who joins Dicker in the investigation.

Meanwhile, in the wake of his father’s passing, Macaire Ebezner is poised to take over as president of the largest private bank in Switzerland. The succession captivates the news media, and the future looks brightuntil it doesn’t. The banks board, including Lev LevovitchGenevas very own Jay Gatsbyhas other plans, and Macaires triumphant rise to the top soon becomes a race against time.

The Enigma of Room 622is a diabolically addictive thriller in which a love triangle, a power struggle, shocking betrayals, and deadly envy play out against the backdrop of a not so placid Switzerland, as the truth twists and turns into something most . . . unexpected.

Translated from the French by Robert Bononno