The fiancées of death, it's the ladies of paradise, beautiful and carefree, that meet every afternoon at the Adlon Hotel in Berlin, to talk and drink champagne, while Europe is on the verge of collapse on the eve of the Second World War. But they are also the victims of a mysterious killer who gradually surprises them on the banks of the Spree or at the Berlin lakes. After his rampage, all that's left of them are mutilated corpses. In a red-hot Berlin that is literally shaking like the crater of a volcano, three unique beings embark on an investigation. Simon Kraus, gifted psychoanalyst, gigolo and a bit of a blackmailer. Franz Beewen, a brutal and ruthless Gestapo officer, and Mina von Hassel, a wealthy heiress and psychiatrist. They follow the monster's trail and gradually uncover the shocking truth. Evil is not always where you expect it to be.

Jean-Christophe Grangé (1961) is a French journalist, screenwriter and author of thrillers and mystery novels. He started his career as a freelance reporter, writing for Paris Match, the Sunday Times and National Geographic. In 1991, he won the Reuter Prize for journalism for his reportage on forest loss, and in 1992 he won the World Press Prize for his reportage on cormorants. He wrote his first book, The Flight of the Storks (Le vol des cigognes), in 1994. His second novel, Les rivières pourpres (The Purple Rivers), was a huge success and was made into a film of the same name starring Jean Reno in 2000 and a co-produced series in 2018. In addition to this thriller, the XYZ publishing house has also published its sequel, The Last Hunt (La dernière chasse), the psychological novel The Black Line (La ligne noire) and the crime thriller Death's Fiancées (Les promises) set in wartime Berlin. The crime novel Le Jour des Cendres (The Day of Ashes) was published in the Czech Republic in 2023.