Sophia Simeonidis, a Greek opera singer, wakes up one morning to discover that a tree has appeared overnight in the garden of her Paris house. Intrigued and unnerved, she turns to her neighbours- Vandoosler, an ex-cop fired from the police for having helped a murderer to escape, and three impecunious historians, Mathias, Marc and Lucien - the three evangelists. They agree - both because they need the money and out of sheer curiosity - to dig around the tree and see if something has been buried there. They find nothing but soil.A few weeks later, Sophia disappears and nobody worries too much until her body is found burned to ashes in a car. Who killed the opera singer? Her husband, her ex-lover, her best friend? Or could it be her lovely niece recently moved to the capital? They all seem to have a motive.Vandoosler and the three evangelists set out to find the truth.