Psychological thriller that focuses on the intense conflict between a university professor and a blackmailer.

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Main Cast: Klaus Schwarzkopf, Elke Sommer, Jürgen Prochnow, Ulla Jacobsson, Kristina Nel, Walter Gross, Anita Kupsch, Berta Drews, Otto Sander, Claus Theo Gärtner

Director: Wolfgang Petersen

Writer: Manfred Purzer

Editor: Traude Krappl-Maass

Cinematographer: Charly Steinberger

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