The poet Ebb, the historian Lutyens and the banker Trepka organize the “Club of Detective Lovers”. However, they have to face not only fictitious crimes, about which they argue passionately. Club members witness mysterious deaths and assassination attempts in the family of Vanloo aristocrats they know. Each Club member follows his own path to solving the riddle. However, its threads lead not only to a specific criminal, but also back centuries to the rocky island of St. Helena, where the defeated Napoleon languished in exile...