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.
| Editing | Peter Przygodda | Editor |
| Writing | Romuald Karmakar | Screenplay |
| Costume & Make-Up | Peri de Bragança | Costume Design |
| Production | Gebhard Henke | Producer |
| Production | Christian Granderath | Producer |
| Directing | Romuald Karmakar | Director |
| Production | Peter Herrmann | Executive Producer |
| Camera | Fred Schuler | Director of Photography |
| Art | Toni Lüdi | Production Design |
| Production | Thomas Schühly | Producer |
| Production | Romuald Karmakar | Producer |
| Writing | Michael Farin | Screenplay |
