A gripping addition to Lemaitre's award-winning Paris trilogy - Irene, Alex and Camille Jean Garnier lives on the fringes - a lonely nobody who has lost everything dear to him. His girlfriend was killed in an unexplained accident, his mother has just been sent to prison - he has even lost his job after the sudden death of his boss. In one last, desperate cry for help, Jean sets up seven lethal bombs, hidden all over Paris and timed so that one will explode every 24 hours.