Cornell Borchers
— Inga
Yvonne Mitchell
— Sonja
Armin Dahlen
— Franz
Alexander Knox
— Chief Justice
Geoffrey Keen
— Marks
Liam Redmond
— First Justice
Eddie Byrne
— Second Justice
Theodore Bikel
— Josip
Pamela Stirling
— Mlle. Poncet
Martin Stephens
— Hans
Andre Mikhelson
— Professor Miran
Ferdy Mayne
— Dr. Muller
Michel Ray
— Toni
Gilgi Hauser
— Sonja's Daughter
Marianne Walla
— Matron
Philo Hauser
— Schoolteacher
Guy Deghy
— Schoolteacher
Carl Duering
— Postman
Richard Molinas
— Herr Pieter
John Welsh
— Chief Marshall
John Schlesinger
— Ticket Collector
Nicholas Stuart
— Reporter
Alec McCowen
— Reporter
Ilona Ference
— Reporter
Randal Kinkead
— Reporter
Guy Standeven
— Courtroom Spectator (uncredited)