BBC1’s new Sherlock Holmes drama is set to become a big hit with US viewers after being snapped up by TV network PBS.

The first three episodes of Sherlock, which are due to air from October 24, have already received a “positive response” from US critics, according to The Sun.

And Benedict Cumberbatch – who stars alongside Martin Freeman show – has just returned from a promotional tour in Los Angeles, along with writers Stephen Moffat and Mark Gatiss.

There is already a buzz about it,” a BBC insider said. “The game is now on, as Sherlock would say, to get that second series in the bag.

“Top brass want it. It’s not a matter of if, but when everyone can get together.”

Benedict – who will also star in Steven Spielberg’s next film War Horse – added that he hopes US viewers will enjoy the show, which transports Holmes and Watson to the modern era.

“If I had a penny for every time a fan of the originals had come up to me and said, ‘I didn’t want to like this, but I did,’ I’d be a rich man,” he said.

“The response has been phenomenal and it’s great. We are very flattered.”