A safecracker turns double agent during WWII.
Christopher Plummer
as Freddie Chapman
Romy Schneider
as Helga Lindstrom (The Countess)
Trevor Howard
as Freddie Young (Distinguished Civilian)
Gert Fröbe
as Colonel Steinhager
Claudine Auger
as Paulette
Yul Brynner
as Baron von Grunen
Harry Meyen
as Lieutenant Keller
Georges Lycan
as Leo
Jess Hahn
as Commander Braid
John Abbey
as Lang
Gil Barber
as Bergman
Jean-Claude Bercq
as Major Von Leeb