Season OneSherlock Holmes was always a modern man - it's the world that got old. Now he's back as he should be: edgy, contemporary, difficult and dangerous, as award-winning actor Benedict Cumberbatch shows him in a new, contemporary light. Sherlock can tell a software designer by his tie, 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 Sherlock's intellect coupled with John's pragmatism soon forge an unbreakable alliance. Across three thrilling, scary, action-packed and highly entertaining television movies, Sherlock and John navigate a maze of cryptic clues and lethal killers to get at the truth. With sparkling scripts and unforgettable performances from the two leads, this is Sherlock for a new generation.Season TwoThe multi award-winning super series is back as Sherlock and John Watson return to face the ultimate test in three of their most famous cases: the Woman, the Hound, and the Fall. Becoming embroiled in the complex plans of the dangerous and desirable Irene Adler, Sherlock needs every one of his remarkable skills to survive, and an invitation to the wilds of Dartmoor brings our terrified heroes face to face with the supernatural. Meanwhile, James Moriarty, still out there in the shadows, is 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.Season ThreeThe question on everyone's lips is finally answered as Sherlock returns in three brand new action-packed adventures. How DID he do it? And how will John take the news that his best friend faked his own death? Sherlock and John's double act is put to the test when John falls in love with Mary Morstan. She's sensible, quick-witted and not at all taken in by Sherlock's posturing. With the demise of Moriarty, Sherlock finds himself locked in another mind battle with the powerful Charles Augustus Magnussen, who is holding the secrets of the world at his fingertips. Once again, the game is on for Sherlock and John in The Empty Hearse, The Sign of Three and finally, His Last Vow.Season FourIn this eagerly anticipated fourth series, Sherlock is back on British soil once more, while Doctor Watson and Mary prepare for their biggest ever challenge - becoming parents for the first time. The hit drama returns with three new episodes promising laughter, tears, shocks, surprises and extraordinary cases.The Abominable Bride"Dr John Watson, meet Mr Sherlock Holmes." We've been here before. But what if this wasn't the modern day? What if this was a Victorian-era Baker Street of steam trains, hansom cabs, top hats and frock coats? Welcome to Sherlock in 1895! Some things remain reassuringly the same: friendship, adventure and, especially... murder. Thomas Ricoletti is surprised to see his wife dressed in her old wedding gown because, just a few hours earlier, she took her own life. Now, Mrs Ricoletti's ghost appears to be prowling the streets with an unslakeable thirst for revenge; Holmes and Watson must use all their cunning to confront an enemy seemingly from beyond the grave. Can they uncover the shocking truth about the Abominable Bride?