George Sanders

Robert Fleming

Lucille Ball

Sandra Carpenter

Charles Coburn

Harley Temple

Boris Karloff

Charles van Druten

Cedric Hardwicke

Julian Wilde

Joseph Calleia

Nicholas Moryani

Alan Mowbray

Lyle Maxwell

George Zucco

H.R. Barrett

Robert Coote

Detective Wilson

Alan Napier

Detective Gordon

Tanis Chandler

Lucy Barnard

Ann Codee

Matilda

Jimmy Aubrey

Nelson (uncredited)

Jack Chefe

Pierre (uncredited)

Charles Coleman

Sir Charles (uncredited)

Alex Frazer

Professor Harkness (uncredited)

Gerald Hamer

Harry Milton (uncredited)

Eddie Parks

Oswald Pickering (uncredited)

Dorothy Vaughan

Mrs. Miller (uncredited)

Stuart Hall

Charles (uncredited)

Herbert Evans

Fleming's Butler (uncredited)

Sam Harris

Old Man at Concert Asking for Whiskey (uncredited)

Isabel La Mal

Dowager Shushing Fleming at Concert (uncredited)

Marjorie Hoshelle

Robert's Rejected Girlfriend (uncredited)

Charles Ferguson

Man in Dance Hall (uncredited)

Ethan Laidlaw

Man in Dance Hall (uncredited)

Mike Lally

Mike (uncredited)

Ethelreda Leopold

Blonde Nightclub Singer (uncredited)

Annette Warren

Blonde Nightclub Singer (uncredited)

Mary Jane French

Nightclub Patron (uncredited)

Shep Houghton

Nightclub Patron (uncredited)

Sol Murgi

Nightclub Patron (uncredited)

Wilson Benge

Police Criminologist (uncredited)

Jack Deery

Police Officer (uncredited)

John Rice

Police Officer (uncredited)

Brooks Benedict

Concertgoer (uncredited)

Carl M. Leviness

Concertgoer (uncredited)

James Conaty

Concertgoer (uncredited)

Robert Haines

Concertgoer (uncredited)

Wilbur Mack

Concertgoer (uncredited)