Anthony Bushell

Det. Insp. Forsythe

Jane Baxter

Linda Kent

Arthur Macrae

Gilbert Kent

Ronald Squire

Jim Kent

Margaret Rutherford

Evelyn Summers aka Miss Butterby

Austin Trevor

Swiss Hotelier-Gang Leader

Davina Whitehouse

Goldie, the maid

Athole Stewart

Mr. Kent

Katie Johnson

Emily Kent

Felix Aylmer

Police Commissioner

George Merritt

Police constable

Wally Patch

Thug

Victor Rietti

Luggage Snatcher (uncredited)

Hal Gordon

Det. Sergeant Helmsley

Bernard Vorhaus