The Return of Doctor X

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)

Loia Cheaney

Nurse (uncredited)

Eddie Graham

Hospital Attendant (uncredited)