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.

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 used to go to the gym regularly and swim an awful lot, but that was when I was unemployed and knew leisure intimately.

I had a girlfriend before I ever had a boyfriend, but it was just a phase.

Some facts in life are immutable. One is, trust no-one who uses the word 'trope'.

Fear is an underrated emotion. And that's why I think it's very dangerous to try and cosset children from it. A healthy scare is as good as as a healthy laugh. In fact, they're two sides of the same coin. There is a desire to shield from the knocks and bumps of reality.

At school I briefly wanted to be a palaeontologist, but I was no good at chemistry and physics.