Peter Finch
— Alec Windom
Mary Ure
— Lee Windom
Natasha Parry
— Anna Vidal
Robert Flemyng
— Col. George Hasbrook
Michael Hordern
— Patterson
Grégoire Aslan
— Mayor Lollivar (as Gregoire Aslan)
John Cairney
— Jan Vidal
Marne Maitland
— Commissioner Belhedron
George Margo
— Police Officer Lansang
Kurt Christian
— Kosti (as Kurt Siegenberg)
Burt Kwouk
— Father Amyan's Aide (uncredited)