Episode 1: A Scandal in Belgravia

A case of blackmail threatens to topple the monarchy itself. But Sherlock and John soon discover there is even more to it than that when they find themselves battling international terrorism, rogue CIA agents and a secret conspiracy involving the British government.

And the case casts a longer shadow on their lives than they could ever imagine as the great detective begins a long duel of wits with Irene Adler, an antagonist as cold, calculating, ruthless and brilliant as himself. Has Sherlock finally met his match?

Episode 2: The Hounds of Baskerville

A hound from hell. A terrified man. Sherlock’s most famous case.

Something terrible has happened to Henry Knight, and Sherlock and John investigate the truth about the gruesome creature that apparently killed their client's father. But is a monster really stalking Dartmoor?

What seems like a far-fetched fantasy in Baker Street is a very different prospect in the ultra-secret army base that looms over the chilling moor.

Episode 3: The Reichenbach Fall

James Moriarty possesses the greatest criminal mind that the world has ever seen. Sherlock and John knew he wouldn't stay hidden for long, but even they never guessed the sheer scale and audacity of the crime that would propel Moriarty back into the headlines.

The crime of the century unfolds when the Tower of London, Bank of England and Pentonville prison are all sprung open on the same day, as if by magic! But Moriarty's masterplan doesn’t stop there.

Sherlock and John lock horns with their old enemy in one final problem that tests loyalty and courage to their very limits. Sherlock must fight for his reputation, his sanity and his life. But is he all he claims to be?