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Boris Karloff
Colonel March

Ewan Roberts
Inspector Ames

Joan Sims
Marjorie Dawson

Richard Wattis
Cabot

Sheila Burrell
Joan Forsythe

Anthony Forwood
Jim Hartley

Ronald Leigh-Hunt
Ireton Bowlder

Patricia Owens
Betty Hartley

John Hewer
John Parrish

Roger Maxwell
Maj. Rodman

Bernard Rebel
The Count

Dana Wynter
Francine Rapport

Marianne Stone
Customer in Bank