Mark Gatiss addresses whether or not Sherlock could make a large display return, led by Benedict Cumberbatch and Martin Freeman. The BBC series was co-developed by Gatiss and his fellow Health practitioner Who author Steven Moffat, imagining Sir Arthur Conan Doyle's iconic detective and other characters in contemporary London. Sherlock ran for four seasons and a seasonal exclusive from 2010 to 2017, but the dilemma remains of irrespective of whether it could at any time return for much more.