Cliff Clark

Inspector Marty Gavigan

Astrid Allwyn

Mrs. Zelma La Claire

Walter Kingsford

Colonel Watrous

Frederick Worlock

Dr. Cesar Sabbatt

Gloria Holden

Madame Rapport

William Demarest

Quinn

Harold Minjir

Tauro

Eddie Acuff

Second Taxi Driver

William Bailey

Spectator in Theatre Box

Margaret Bert

Mary W. Hotchkinson

Truman Bradley

Nightclub Master of Ceremonies

Ralph Brooks

Nightclub Patron

Chester Clute

Waiter with Sugar

John Davidson

Weird Voice (voice)

John Webb Dillion

Magic Show Audience Volunteer

Edward Earle

Ace of Spades Man

Herbert Evans

Nightclub Patron

Jack W. Johnston

Magic Show Audience Volunteer

Suzanne Kaaren

Magician's Assistant in Demo

Armand Kaliz

François

Edward Kilroy

First Attendant

Charles Lane

Fleetwood Apartments Desk Clerk

Richard Loo

Chinese Soldier in Demo

Frances MacInerney

Magician's Assistant in Magic Show

Alphonse Martell

Nightclub Headwaiter

Frank McLure

Magic Show Audience Volunteer

Claire McDowell

Jack of Diamonds Woman

Matt McHugh

'All Over Town' Bus Driver

Harold Miller

Nightclub Patron

Roger Moore

Magic Show Audience Volunteer

James C. Morton

Blackie the Electrician

Richard Neill

Magic Show Audience Volunteer

Field Norton

Mr. Hotchkinson

Manuel París

Sinister Man in Theatre Box

John Picorri

Colonel in Demo

Cyril Ring

Numbers' Man

Larry Steers

Nightclub Patron

Bert Stevens

Magic Show Audience Volunteer

Amelia Stone

Minor Role

Paul Sutton

Army Captain Robert Z. Storm

William Tannen

Spectator in Theatre Box

Phillip Terry

Magic Show Master of Ceremonies

Harry Tyler

First Taxi Driver

Monte Vandergrift

Police Officer Bergin

Harry J. Vejar

Citizen Who Speaks No English

E. Alyn Warren

Dr. Hendricks - the Coroner