A good doctor is out to stop his evil doctor brother from blackmailing his patients.
Curd Jürgens
Dr. Jan Diffring
Christiane Rücker
Margot Rau
Heinz Reincke
Willi Nippens
Marianne Hoffmann
Karin Steffen
Fritz Wepper
Hein Jungermann
Monika Zinnenberg
Gerda Heske
Friedrich Schütter
Siegfried Gersum
Suzanne Roquette
Elisabeth Langhoff
