Sherlock is a television crime drama that presents a contemporary adaptation of Sir Arthur Conan Doyle 's Sherlock Holmes detective stories. Created by Steven Moffat and Mark Gatiss, it stars Benedict Cumberbatch as Sherlock Holmes and Martin Freeman as Doctor John Watson. The first series of three episodes aired in 2010, while series two aired in 2012, and a third series aired in the first quarter of 2014. The third series has become the UK 's most watched drama series since 2001. A single episode aired in 2016, as a Victorian - era special. Sherlock has been sold to over 200 territories.
how many episodes are in sherlock holmes season 1
three