John Watson (Martin Freeman), army doctor, invalided home from Afghanistan, alone and friendless ... 

Sherlock Holmes (Benedict Cumberbatch), the most brilliant intellect of his generation, alone and friendless ...

London 2010 - the best and longest friendship in all of fiction is about to begin anew. The most famous detective, the most baffling mysteries, the most thrilling adventures and the deadliest foes, are coming in out of the fog. Sherlock Holmes was always a modern man - it was the world that got old. Now he's back as he should be - edgy, contemporary, difficult, dangerous.

Inspector Lestrade (Rupert Graves) is the best Scotland Yard has got, but he knows he's not as good as a strange young man called Sherlock ...

The world's favourite detective has come out of the fog.