When Moffat took over from Davies as Doctor Who’s head writer, he was in Hollywood, having been contracted to write three Tintin films for Steven Spielberg. He walked out on Spielberg – what a thing to have on his CV! “I felt really guilty. Far from swaggering out of the building saying, ‘I don’t care about your damn movie’, I felt haunted with guilt because I was the villain. I’m glad they used some of my script in the first film. Steven was lovely about it. He could have sued me.

Sherlock and Doctor Who writer Steven Moffat interviewed

(beware Sherlock spoilers, Americans.)