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.

• Pantera Film
• Götz George
• Jürgen Hentsch
• Hans-Michael Rehberg
• Pierre Franckh
• Matthias Fuchs
• Marek Harloff
• Christian Honhold