James Mason
— The Murderer / Maj. Linden / Jonah Watson
Pamela Mason
— The Artist / Pamela / Baroness Tanslan / Lilly
Scott Forbes
— Capt. Stamm
Paul Cavanagh
— Col. Heisler
Bruce Lester
— Capt. van Buren
John Dodsworth
— Lt. Meyerdorf
Judy Osborne
— Dotty
Sean McClory
— Jack Stuydevant
Vince Barnett
— Berg