Sherlock Holmes' Fatal Hour

In London, diplomatic attaché Ronald Adair is blackmailed into transporting counterfeit money to Paris after a meeting with Professor Moriarty, prompting his sister Kathleen to call for Sherlock Holmes' and Dr. Watson's assistance. After Adair's apparent suicide, Holmes deduces Moriarty's involvement from clues. Arthur Wontner stars as the iconic detective in this 1931 mystery film, which draws inspiration from "The Empty House" and "The Final Problem".