在这部死神犯罪/剧情片中,人们在河边发现了一个年轻人的头盖骨，哈尔曼供认，他用咬断颈动脉的方法杀害了24名青少年，并将他们的尸体肢解、剁碎后投入了莱茵河。他之所以咬杀青少年，是由于长期性障碍所致，是陶醉于同性恋时的发泄行为。他的行为激起众怒，在庭审时，有200余人出庭作证。
Fritz Haarmann, who has killed at least 27 boys, is questioned by a psychology professor in order to find out whether he is sane and can be held responsible for his crimes. During this interrogation Haarmann reveals his motives and his killing methods.
