Doctor X

Lionel Atwill

Dr. Jerry Xavier

Fay Wray

Joanne Xavier

Lee Tracy

Lee Taylor

Preston Foster

Dr. Wells

John Wray

Dr. Haines

Harry Beresford

Dr. Duke

Arthur Edmund Carewe

Dr. Rowitz

Leila Bennett

Mamie

Robert Warwick

Commissioner Stevens

George Rosener

Otto, Dr. Xavier's Butler

Willard Robertson

Detective O'Halloran

Thomas E. Jackson

Daily World Editor

Harry Holman

Mike, Waterfront Policeman

Mae Busch

Cathouse Madame

Tom Dugan

Sheriff

Raoul Freeman

Morgue Detective (Uncredited)

Selmer Jackson

Willard Keefe, Daily World Night Editor (Uncredited)

Charles McMurphy

Detective at Headquarters (Uncredited)

Ky Robinson

Morgue Detective (Uncredited)

Louise Beavers

Louise (Uncredited)

Michael Curtiz

Director

Al Alleborn

Assistant Director

Marshall Hageman

Assistant Director

Robert Tasker

Screenplay

George Rosener

Screenplay

Earl Baldwin

Screenplay

Allen C. Miller

Theatre Play

Howard Warren Comstock

Theatre Play

Darryl F. Zanuck

Executive Producer

Hal B. Wallis

Executive Producer

William Forsyth

Casting Assistant

William Maybery

Casting Assistant