Roger Moore dons the deerstalker and pipe to play master sleuth Sherlock Holmes. In this mystery, Holmes pursues his arch-enemy Moriarty (John Huston) to New York, which the villainous scoundrel has carried out the ultimate bank robbery. Meanwhile, Holmes enjoys a blossoming romance with Charlotte Rampling, who becomes the target of a kidnap by (yes, you've guessed it) Moriarty.