Russell T. Davies has promised a dark end to his time as executive producer of Doctor Who.The chief writer is leaving the show at the end of this year's specials and will be succeeded by Steven Moffat.
Meanwhile, Tenth Doctor David Tennant will be replaced Matt Smith in the title role.
Davies told The Times: "People are going to be Doctor Who-deprived this year, so it's got everything in it: CGI monsters, prosthetic monsters, army, police, an alien planet.
"It's our last chance to have a bit of a laugh. Now the Doctor's facing the end of his life, it's going to get dark."
When asked if there would be a dry eye in the house after his last episode, he said: "I should f**king think not!"

The partnership of lifelong Whovians Tennant and Davies has seen the show cement itself in the national psyche, exterminate all competition in the ratings and scoop award after award. During a break from making the next special in Cardiff, Tennant and Davies steeled themselves with a tray of BBC sandwiches to consider past, present and future. Very Who.
Tell us about the Easter special, Planet of the Dead.
Russell T Davies People are going to be Doctor Who-deprived this year, so it’s got everything in it: CGI monsters, prosthetic monsters, army, police, an alien planet . . . It’s our last chance to have a bit of a laugh. Now the Doctor’s facing the end of his life, it’s going to get dark.
David Tennant Some of it was filmed in Dubai, and there were sandstorms . . . We were despairing. I’d look into the distance and go (Acting), “What is this strange alien world?” Well, I couldn’t actually open my eyes to look at it. The Exfoliation of Doom would be a good subtitle. My hair was full of sand. And blonde. I looked like Tina Turner.
Come the final curtain, will there be a dry eye in the house?
RTD I should f***ing think not!
DT Well, I cried (when I read it).
Did you make a pact to leave together?
DT We talked about it. It wasn’t a pact . . . I’d sort of decided. But then I nearly changed my mind again.
RTD We had dinner and chatted about it a few years ago. It just felt right. The BBC asked me to do a series five, but I didn’t shift at all.
Full interview here


In an interview with Times Online, Doctor Who Executive Producer/Writer Russell T. Davies has stated he would have loved to have done a Doctor Who and Star Trek crossover.
I would have loved to have done a Star Trek crossover. The very first year, we talked about it. Then Star Trek finally went off air. Landing the Tardis on board the Enterprise would have been magnificent. Can you imagine what their script department would have wanted, and what I would have wanted? It would have been the biggest battle.
The interview then moves on from Star Trek to Star Wars, with Davies being asked whether or not Geoge Lucas asked him to participate in his new live-action Star Wars series.
He came knocking on every single writer’s door in the whole land. And there are British writers working for him on this Star Wars series. But I’m not allowed to say who. The writers are out there now, at Skywalker Ranch (in California). Yesterday, they were allowed into the props room; they were playing with lightsabers. It’s a lovely job. But I’m not going to do a sci-fi series that’s second-rate compared to Doctor Who (hoots of laughter).
He was also asked how much influence he would exert over Matt Smith’s version of Doctor Who:
Absolutely none. I wouldn’t want to write a single word for him. When he appears, every word will be written by Steven Moffat. He’s Steven’s, and Matt’s, character.