Sherlock Season Three finale ‘His Last Vow‘, saw the return of Sherlock’s arch-nemesis, Moriarty, appearing in Sherlock’s mind palace.
“That was a really interesting one,” Andrew Scott told Digital Spy of the hallucinatory scene. “It was part of an extraordinary sequence that I thought was really beautifully directed, and read fantastically well on the page. It was a case of removing myself a little bit from Moriarty, because it was in Sherlock’s mind palace. So it allowed me to go to real extremes with the character, to see what he would be like were he completely unleashed.
“I like being able to see Moriarty through Sherlock’s eyes, it’s such an interesting angle on the character. It’s an insight into the mind of the hero, as much as anything, so it was good to be able to play a different note.”
“I like the fact that, in a playful way, the third series included [the fans],” Andrew said of the show’s fans, who inspired a fantasy sequence in which Sherlock and Moriarty kiss. “For the most part, they’re very enthusiastic and respectful people, and the support has just been extraordinary.”
Andrew also confirmed that he knows the truth behind series three’s climactic twist: “I do know the answer to that question, yes, and I’m not going to tell you!”
Showrunner Steven Moffat has reassured fans that: “We’ve had certain aspects of what we’re going to do mapped out for quite a while. We can’t say much more than that, but it is not a last-minute whim.”
Moffat added that he and Gatiss had discussed Moriarty’s reappearance with actor Scott “ages ago”.
“You’d have painted yourself into the most ludicrous corner [if you hadn’t planned it in advance],” said Moffat.