Its a bit greedy really, he concedes.
Ill have to stop!
This years special Christmas episode, Twice Upon a Time, is very special indeed.
But really its about the wonderful interplay between the two Doctors.
I just had to pinch myself at times.
Obviously, were very close friends and collaborators, says Gatiss.
Early this year, he took me aside and said, Will you keep the summer free?
Its the sort of thing the Doctor says.
But theyre shooting Jodies first season now.
Its all new people and he has a totally different way of working.
So, at the moment, I dont know.
It might just be time for someone else to have a go.
I must admit, the idea of not writing for it again is very strange.
I dont know anything!
TheDoctor Whospecial Christmas episode premieres on BBC America on Dec. 25 at 9 p.m. Watch the shows trailer, above.