People don't have arch-enemies - apart from Sherlock Holmes. And his just happens to be an adversary with an intelligence to match his own - James Moriarty.
Since John's online blog has taken off business is better than ever for the dynamic duo, as they take on three of their most famous cases: the Woman, the Hound, and the Fall. But, always in the background, Moriarty continues to play the puppet master, determined to bring Sherlock down - whatever the cost.
With beguiling performances, witty scripts and some of the most intriguing characters ever created, it's no wonder that Sherlock has proven to be a worldwide success. Series two brings a trio of thrilling twists and turns - and some of the greatest detective work ever seen.
Episode 1 - A Scandal in Belgravia
A case of blackmail threatens to topple the monarchy itself, but soon Sherlock and John discover there is even more to it than that. They find themselves battling international terrorism, rogue CIA agents, and a secret conspiracy involving the British government.
But this case will cast a longer shadow on their lives than they could ever imagine, as the great detective begins a long duel of wits with an antagonist as cold and ruthless and brilliant as himself: Irene Adler. A Royal scandal, a dazzling game of cat and mouse. The seductive Irene Adler is cold, calculating, brilliant. Has Sherlock finally met his match?
Episode 2 - The Hounds of Baskerville
Sherlock's most famous case. A Hound from Hell. A terrified man. But is a monster really stalking Dartmoor?
What seems like fantasy in Baker Street is a very different prospect in the ultra-secret army base that looms over the 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. The Tower of London, the Bank of England and Pentonville prison - all sprung open on the same day, as if by magic! But Moriarty's plans don'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?