Byron Foulger
— Dr. Laren aka Dr. Dibson
Dick Elliott
— Judge Gilmenn
Morris Ankrum
— Dr. Adams (uncredited)
Paul E. Burns
— Janitor John Billings (uncredited)
Edward Earle
— Judge (uncredited)
Franklyn Farnum
— Radio Station Man in Studio (uncredited)
Frank Fenton
— Chester Malton (uncredited)
William Forrest
— Dr. Cooper (uncredited)
Selmer Jackson
— Darles F. Peters (uncredited)
Paul Langton
— Mr. Winthrop (uncredited)