Craig Kennedy (archive footage)
Walter Jameson (archive footage)
Verna Gironda (archive footage)
Mrs. Paul Gironda (archive footage)
Shirley McMillan (archive footage)
Insp. Gordon Gaunt (archive footage)
Prof. Paul Gironda (archive footage)
Joe Mitchell (archive footage)
Frank Hobart (archive footage) (as Charles Locher)
Dr. Louis Bouchard (archive footage)
Dr. Denton (archive footage)
Nicky, (archive footage)
Montgomery (archive footage)
Blackie Humphries / Hamik (archive footage) (as Gordon S. Griffith)
Wickham - the Gironda Butler (archive footage)
Prison Warden (archive footage)
Number 8 (archive footage)
Cromwell (archive footage) (as Joe Girard)
Spike Harvey (archive footage)
Jenkins - the Kennedy Butler (archive footage)
Marty (archive footage)
Olaf (archive footage) (uncredited)
Board Director (archive footage) (uncredited)
Henchman (archive footage) (uncredited)
Bartender Steve (archive footage) (uncredited)
Arthur J. White (archive footage) (uncredited)
Captain Hansen (archive footage) (uncredited)
Sailor (archive footage) (uncredited)
Prison Guard Riley (archive footage) (uncredited)
Margaret - the Maid (archive footage) (uncredited)
Sullivan (archive footage) (uncredited)
Police Officer Regan (archive footage) (uncredited)
Angry Gambling Sailor (archive footage) (uncredited)
Sailor Slug (archive footage) (uncredited)
Maid (archive footage) (uncredited)
Policeman (archive footage) (uncredited)
Waiter Snub (archive footage) (uncredited)
Prison Trusty (archive footage) (uncredited)
Miss Dillon (archive footage) (uncredited)
A. J. Gallagher (archive footage) (uncredited)