Benedict Cumberbatch goes old-school Sherlock in new trailer! (VIDEO)

Sherlock Holmes is back – and back in time – in a new trailer for a special episode of the master detective’s adventures.

The BBC’s latest version of Arthur Conan Doyle’s hero, starring Benedict Cumberbatch and Martin Freeman as Holmes and Dr Watson, updates the story to modern-day London.

But the new clip, unveiled to fans at Comic-Con in the United States, shows the pair back on familiar ground in what seems to be Victorian London complete with horse-drawn hansom cabs clattering over the cobbles in Baker Street.

It shows Benedict, complete with trademark pipe and deerstalker, explaining to his landlady Mrs Hudson (Una Stubbs) why he is late coming home, saying: “That’s the trouble with dismembered country squires. They are notoriously difficult to schedule.”

Asked if he caught the killer, he says: “Caught the murderer, still looking for the legs, think we’ll call it a draw.”

The hit BBC show, created by Mark Gatiss and Steven Moffat, is inspired by the original stories created by Arthur Conan Doyle.

SherlockMartin Freeman and Benedict Cumberbatch in Sherlock costume (BBC)

It regularly pulls in huge audiences and has been a worldwide hit, propelling its two leading men to Hollywood and in Benedict’s case an Oscar nomination.

The third series bowed out last year with Sherlock appearing to shoot villain Charles Augustus Magnussen, and teased viewers that Andrew Scott’s criminal mastermind Moriarty may have cheated death and be set for a return.

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