The Crime Doctor

Otto Kruger

Dan Gifford

Karen Morley

Andra

Nils Asther

Gary Patten

Judith Wood

Blanche Flynn

William Frawley

Fraser

Donald Crisp

Mr. Anthony, District Attorney

Frank Conroy

Martin Crowder

J. Farrell MacDonald

Kemp

Fred Kelsey

Bloodgood

G. Pat Collins

Walters

Samuel S. Hinds

Ballard

Wallis Clark

Judge Mallory (uncredited)

Willie Fung

Wah-Sing (uncredited)

Tom London

Detective at Airport Arrest (uncredited)

Pat O'Malley

Detective (uncredited)

Lee Phelps

Detective (uncredited)