Sydney Greenstreet

Supt. George Edward Grodman

Peter Lorre

Victor Emmric

Joan Lorring

Lottie Rawson

George Coulouris

Supt. John R. Buckley

Rosalind Ivan

Mrs. Vicky Benson

Paul Cavanagh

Clive Russell

Arthur Shields

Rev. Holbrook

Morton Lowry

Arthur Kendall

Holmes Herbert

Sir William Dawson

Art Foster

PC Warren

Clyde Cook

Barney Cole

Jimmy Aubrey

Newsboy (uncredited)

Leah Baird

French Charwoman (uncredited)

Wilson Benge

Cockney (uncredited))