A writer named Joël, Switzerland’s most prominent novelist, flees to the Hôtel de Verbier, a luxury resort in the Swiss Alps. Disheartened over a recent breakup and his longtime publisher’s death, Joël hopes to rest. However, his plans quickly go awry. It all starts with a seemingly innocuous detail: at the Verbier, there is no room 622. 

Before long, Joël and fellow guest Scarlett uncover a long-unsolved murder that transpired in the hotel's room 622. The attendant circumstances: the succession of Switzerland’s largest private bank, a mysterious counterintelligence operation called P-30, and a most disreputable sabotage of hotel hospitality. A European phenomenon, The Enigma of Room 622 is a matryoshka doll of intrigue–as precise as a Swiss watch–and Dicker’s most diabolically addictive thriller yet.