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.
Götz George
as Fritz Haarmann
Jürgen Hentsch
as Prof. Dr. Ernst Schultze
Hans-Michael Rehberg
as Kommisar Raetz
Pierre Franckh
as Stenograph
Matthias Fuchs
as Dr. Machnik
Marek Harloff
as Kress
Christian Honhold
as Arzt
