The Return of Doctor X

Humphrey Bogart

Dr. Maurice Xavier

Rosemary Lane

Joan Vance

Wayne Morris

Walter Wichita Garrett

Dennis Morgan

Dr. Rhodes

John Litel

Dr. Flegg

Lya Lys

Angela

Huntz Hall

Pinky

Charles Cahill Wilson

Det. Kincaid

Vera Lewis

Miss Sweetman

Howard Hickman

Chairman

Olin Howland

Undertaker

Cliff Saum

Detective Sergeant Moran

Creighton Hale

Hotel Manager

John Ridgely

Rodgers

Joseph Crehan

Editor

Glenn Langan

Interne

William Hopper

Interne

Nat Carr

Reporter (uncredited)