Sue Vertue directed a sitcom written by Steven Moffat.
Sherlock (TV series) . Created by Steven Moffat and Mark Gatiss , it stars Benedict Cumberbatch as Sherlock Holmes and Martin Freeman as Doctor John Watson . Sue Vertue . Vertue met writer Steven Moffat at the Edinburgh Television Festival in 1996 . When Vertue asked Moffat to write a sitcom for Hartswood , he decided to base it around the evolution of their own relationship .