Adaptation of an Arthur Conan Doyle novel, in which Sherlock Holmes and Dr. Watson investigate the secret of a wealthy businessman.
Cast:
John Longden, Campbell Singer, Hector Ross, Ninka Dolega, Beryl Baxter
Production:
Vandyke Pictures, Dryer & Weenolsen Productions
Sherlock Holmes
Dr. Watson
Neville St. Clair
Kate St. Clair
Doreen
Luzatto
