On February 8, 2024, Qader B. took 13 people hostage on a small provincial rail line in Switzerland. One dead, fourteen traumatized: this is the heavy toll of Qader B.'s descent into hell, an Iranian Kurdish asylum seeker who came to Switzerland seeking happiness but who ended up sowing terror. The report looks back at the flaws in his psychiatric care, the ordeal of an employee at an asylum center who became the object of the applicant's obsessive stalking, and the assault by the police that led to the assailant's death on the spot.