Albert Latour (as Mr. Leslie Howard)
Gustav Dupont
Helene Dupont
Professor Menard (as Sir Nigel Playfair)
Welton
Brevin (as Claude Allister)
Monsieur Pignolet (as W. Graham Browne)
Valerie
Dr. Germont
Maid (uncredited)
Butler (uncredited)
Man from Reclamation Agent (uncredited)