Basil Rathbone

Sherlock Holmes and the secret weapon: Sherlock Holmes is called upon to protect a revolutionary new weapon of war from falling into the hands of his arch-enemy Professor Morarity. The woman in green: Sherlock Holmes enters a case on behalf of a bewildered suspect in an attempt to uncover an insidious plan conceived by Professor Morarity. Terror by night: Sherlock and Watson investigate the murder on a train from London to Edinburgh and how it might...

Professor Moriarty has at long last been brought to trial for murder, but is acquitted after the court finds a lack of sufficient evidence. Moriarty wastes no time in plotting his next crime, but he must first divert the attention of the Great Detective.

London is in a panic over a series of apparent "Pajama Suicides." Sherlock Holmes, however, is more inclined to believe that they are calculated murders. It is up to the detective and his partner, Dr. Watson, to discover the motive and the means of these crimes and to quickly unmask the murderer. Miss Adria Spedding is an intoxicating woman of character whom Holmes is convinced is behind the killings. A series of masquerades and deadly game playing...