Holmes is back, but not as you remember him. This 21st century Holmes is driven, technology-savvy, deeply flawed and ready to take on some of the most fiendish criminals the world has ever seen.

Sherlock can tell a software designer by his tie and an airline pilot by his thumb. He has a unique analytical brain unlike anyone else in the world, who staves off boredom by solving crimes.

When a chance encounter brings soldier John Watson into Sherlock's life, it's apparent the two men couldn't be more different, but the pair soon forge an unbreakable alliance.

Across three thrilling, action-packed episodes, Sherlock and John navigate a maze of cryptic clues and lethal killers to uncover the truth.

Starring Benedict Cumberbatch (Small Island, Hawking, The Last Enemy) and Martin Freeman (The Office, Hitchhiker's Guide to the Galaxy, Nativity).

Episode 1 - A Study in Pink

A woman in pink lies dead in a derelict house. She is the fourth in a series of seemingly impossible suicides. DI Lestrade is the best Scotland Yard has got, but even he knows that there's only one man who can help.

Elsewhere in London, a war hero, invalided home from Afghanistan, meets a strange but charismatic genius who is looking for a flatmate; Dr John Watson and Sherlock Holmes are meeting for the first time.

Episode 2 - The Blind Banker

Watson's new life is never dull - after all, he's sharing a flat with Sherlock Holmes. But solving mysteries won't pay the bills. The trouble is, though, that Sherlock's idea of a visit to the bank is not quite what Watson had in mind.

Mysterious ciphers are appearing on walls all over London and anyone who sees them is dead within hours, from the glittering financial hub of the city to the heart of a travelling Chinese circus. Sherlock and Watson must decipher the deadly symbols before anyone else falls victim to the mysterious Black Lotus.

Episode 3 - The Great Game

Despairing of the ingenuity of London's criminals, Sherlock is invited to take on what looks to be a very ordinary case - a young civil servant found on a railway line with his head smashed in. It seems to be open and shut - or so he thinks.

The curtain is about to rise on a terrifying game of cat and mouse as a crazed bomber pits his wits against Sherlock. A 20-year-old murder, a blood-soaked car, a rediscovered Old Master worth millions - it's just the kind of adventure Sherlock and John relish, but who is behind these deadly puzzles? London is set to become a battle ground as Sherlock confronts the one person capable of beating him.