Curd Jürgens as Dr. Jan Diffring

Christiane Rücker as Margot Rau

Heinz Reincke as Willi Nippens

Marianne Hoffmann as Karin Steffen

Fritz Wepper as Hein Jungermann

Monika Zinnenberg as Gerda Heske

Friedrich Schütter as Siegfried Gersum

Suzanne Roquette as Elisabeth Langhoff

Michael Conti as Helmut Weiher

Astrid Fournell as Bärbel Harms

Hans W. Hamacher as Kriminalrat Janson

Dieter Borsche as Pfarrer Feddersen

Rolf Olsen as Leichenbeschauer

Horst Naumann as Dr. Klaus Diffring

Claus Tinney as Partyguest

Karin Schubert as Aktmodell

Renate Schubert as Käthe Braun

Carlo Liebmann as Lutz