20 Sherlock Series 3 Secrets From Mark Gatiss And Steven Moffat We’re only two weeks into 2014, but it’s a safe bet Sherlock will remain one of the most talked-about TV shows of the year. In the run-up to its return, we spoke to showrunners Steven Moffat and Mark Gatiss on the set of 221B Baker Street (as seen in Issue 295), also taking the time to talk to production designer Arwel Wyn Jones about