Dr. John Watson treats a patient who has lost a thumb. The patient says that the loss of his thumb was not an accident but the result of an attack. However, he fears that the story behind the loss of his digit is so strange that the police will not believe it.
Eille Norwood
as Sherlock Holmes
Hubert Willis
as Dr. John Watson
Bertram Burleigh
as Hatcherley
Ward McAllister
as Ferguson
Mercy Hatton
as Girl
