Helmut Käutner
— Professor
Yvonne Furneaux
— Professor's Wife
Paul Hubschmid
— Professor's Friend
Peter Vogel
— Professor's Friend
Friedhelm Lehmann
— Professor's Friend
Christiane Hörbiger
— Professor's Assistant
Dominique Müller
— Professor's Daughter
Charlotte Kerr
Alexander Allerson
Willibald Eser
Anita Mally
