U.S. spies catch a Moscow-born U.S. citizen helping spies, and they force him to counterspy.
Ernest Borgnine
Boris Mitrov
Kerwin Mathews
Bob Avery
Colleen Dewhurst
Helen Benson
Alexander Scourby
Colonel Vadja Kubelov
Glenn Corbett
Frank Sanford
Hanna Landy
Bess Harris
Vladimir Sokoloff
Papa of Boris Mitrov
Friedrich Joloff
Gen. Nikolai Chapayev
