Ulli Lommel Director Kurt Raab Insp. Fritz Haarmann Actor, Screenwriter Margit Carstensen Frau Lindner Actor Ingrid Caven Dora Actor Wolfgang Schenck Kommissar Braun Actor Brigitte Mira Louise Engel Actor Jeff Roden Hans Grans Actor Rainer Hauer Kommissar Müller Actor Barbara Bertram Elli Actor Rainer Werner Fassbinder Producer, Film Editing Michael Fengler Producer Peer Raben Original Music Jürgen Jürges Cinematographer Thea Eymèsz Film Editing