Autumn, Stockholm archipelago. The female quartet "Furioso" gathers on the island of Svalskjær to record a new album. Due to injury, the best violinist is forced to look for a replacement at the last moment. She invites her longtime friend, the famous musician Raoul Libeskind, to take part in the recording. Although not everyone is happy with her choice, no one imagines that soon a fatal crescendo of passion will sound on a quiet island, and the corpse of one of the participants in “Furioso” will be found in the coastal waters. Stockholm detectives understand that untangling the tangle of old grievances and new connections will not be easy... Furioso is a modern interpretation of the classic detective drama in the spirit of Agatha Christie. A novel where passion is crime and Mozart sets the tone for all the action.