The mysterious death of Sir Charles Baskerville is blamed on a longstanding curse that has followed his family for 200 years, a supernatural hound who roams the moors. Detective Sherlock Holmes attempts to uncover the truth.
Mary Morstan, a young governess, has been receiving a rare and lustrous pearl annually from an anonymous benefactor. This mysterious person now wants a meeting. Anxious and bewildered, Miss Morstan enlists Sherlock Holmes and Dr. Watson to escort her to this meeting.
Legendary opera star Irene Adler is threatening to destroy the King of Bohemia's reputation with proof of their illicit affair. The evidence? A photograph. Her ransom? The king's hand in marriage.
The scene of the crime is Whitechapel, the same London district notorious for the recent attacks of Jack the Ripper. Three monks are found dead, the apparent victims of a vampire - now, someone else is out for blood. Or is it something else? As bizarre events unfold, the answer is left to Sherlock Holmes and Dr. Watson to find.