Life's probably fairly tricky for Steven Moffat at the moment. He's working on Doctor Who's massive 50th anniversary Special and Sherlock series three all at the same time... which is understandably having a bit of an effect on him.
In an interview with the Radio Times, Moffat claimed that his working day at the moment is 'hell'. However, he also said:
“It’s hell in a lovely way because I’m working on my two favourite shows – Doctor Who and Sherlock. Not a completely unbiased choice, but it is very difficult. There’s a lot to do. I’m a bit anxious and scared about getting the Doctor Who 50th wrong – but I think it’s going well.Moffat also revealed some clues about the upcoming eight episodes:
We're up in the air, we're under the water, we're on a fantastic alien planet, we're back in time, we're forward in time, and the Doctor's greatest secret is in jeopardy.The second half of Doctor Who's seventh series begins on Saturday 30 March.