Sherlock Holmes investigates a series of so-called "pajama suicides". He knows the female villain behind them is as cunning as Moriarty and as venomous as a spider. Based on "The Sign of Four" and the short stories "The Dying Detective", "The Final Problem", "The Speckled Band" and "The Adventure of the Devil's Foot".

Mystery, Crime, Thriller

Basil Rathbone, Nigel Bruce, Gale Sondergaard, Dennis Hoey, Vernon Downing, Alec Craig