Holmes and Watson get back to detecting

Life has been busy for the stars of Sherlock since the series premiered in 2010, with UK TV producers Steven Moffat and Mark Gatiss applying new London style and contemporary quirks to Arthur Conan Doyle's famous consulting detective. Its fourth season - there have been breaks - premiered on New Year's Day.

Benedict Cumberbatch plays a 21st-century Holmes in Sherlock.

Martin Freeman, the series' Dr John Watson, has gone from a guy you may have seen on the British version of The Office (2011-2013) to playing Bilbo Baggins in three Hobbit movies.