Le 19 décembre 2012, Vulture a publié un interview de Steven Moffat dont le principal sujet est Doctor Who, mais à la toute fin de l'entretien, il a aussi évoqué la Saison 3 de Sherlock :
"Can I ask where you are with Sherlock? There was a report that production had been delayed.
The delay is completely insignificant as far as the [airdate] is concerned. It was just to fit around Benedict Cumberbatch’s schedule. We’ve got two scripts in second drafts. I haven't started yet because I'm still finishing up with Doctor Who. We're fine. The production delay means nothing at all. I was never going to present over the summer in the U.K. so this doesn’t affect that at all."