I'm terribly nostalgic, but I'm with the Elizabethans who thought nostalgia was a disease. It's a dangerous place to be because you can get caught up in it.

Europe is so much the home of Horror, with its myths of vampires, werewolves, witchcraft and the undead, yet it's like those myths were exported to Hollywood, leaving Europe the room to develop a new tradition as a way of processing its traumas, particularly the two world wars.

The question I ask myself is: have I really just become a squeamish middle-aged man, or has something happened to the horror genre that shows a growing appetite for watching torture, or at least a desire to explore it on film? And if so, why would that be? I can't pretend I know. I just know I don't like it.

When I was seven or eight, I was bought a fantastic book called 'The Movie Treasury of Horror Movies' by Alan G. Frank; it became my bible. It's packed full of the most amazing photos and is still fantastic to look at.

We turned the lights off to save money, so you can't really see it. It's the same show. Hopefully, there are lots of laughs and lots of great personal stuff, but it is explicitly a darker season [4 of Sherlock Holmes].

I love going to galleries, particularly the National Portrait Gallery.

We made our Moriarty very different to [Conan] Doyle's. He's Irish, and he brings all his charm, his twinkle and his humor to it while he's also terrifying.