Cast
- Reiner Schöne as Der Fremde
- Joseline Gassen as Studentin
- Karl Michael Vogler as Vorgesetzter
- Dirk Dautzenberg as Vertreter
- Horst Michael Neutze as Kommissar
- Klaus Miedel as Laborchef
- Hans Georg Panczak as Privatassistent
- Horst Niendorf as Professor
- Friedrich Schoenfelder as Polizeipräsident
- Wilfried Herbst as Arzt