The Strange Case of Doctor Rx

Patric Knowles

Private Detective Jerry Church

Lionel Atwill

Dr. Fish

Anne Gwynne

Kit Logan Church

Mantan Moreland

Horatio B.Fitz Washington

Samuel S. Hinds

Dudley Crispin

Mona Barrie

Eileen Crispin

Shemp Howard

Det. Sgt. Sweeney

Paul Cavanagh

John Crispin

Edmund MacDonald

Det. Capt. Bill Hurd

John Gallaudet

Ernie Paul

William Gould

Dist. Atty. Mason

Leyland Hodgson

Thomas, the butler

Matty Fain

Tony Zarini

Mary Gordon

Mrs. Scott

Selmer Jackson

Judge

Jan Wiley

Lily

Russell A. Gausman

Set Decoration

Jack Otterson

Art Direction

Hans J. Salter

Music Director

Jack Bernhard

Associate Producer

William Nigh

Director

Elwood Bredell

Director of Photography

Alex Gottlieb

Story

Clarence Upson Young

Screenplay

Bernard W. Burton

Editor

Charles Carroll

Sound