Long buried secrets finally come to light as someone has been playing a very long game indeed. Sherlock and John face their greatest ever challenge. Is the game finally over?

Sherlock faces one of the most chilling enemies of his long career: the powerful and seemingly unassailable Culverton Smith - a man with a very dark secret indeed.

Sherlock Holmes and Dr. Watson find themselves in 1890s London in this holiday special.

Sherlock goes up against the notorious blackmailer Charles Augustus Magnussen.

Sherlock tries to give the perfect best man speech at John's wedding when he suddenly realizes a murder is about to take place.

Mycroft calls Sherlock back to London to investigate an underground terrorist organization.

Jim Moriarty hatches a mad scheme to turn the whole city against Sherlock.

Sherlock and John investigate the ghosts of a young man who has been seeing monstrous hounds out in the woods where his father died.

Sherlock must confiscate something of importance from a mysterious woman named Irene Adler.

Mycroft needs Sherlock's help, but a remorseless criminal mastermind puts Sherlock on a distracting crime-solving spree via a series of hostage human bombs through which he speaks.

Mysterious symbols and murders are showing up all over London, leading Sherlock and John to a secret Chinese crime syndicate called Black Lotus.

War vet Dr. John Watson returns to London in need of a place to stay. He meets Sherlock Holmes, a consulting detective, and the two soon find themselves digging into a string of serial "suicides."