Doctor Who’s perennial nemesis, The Daleks, are set to haunt him once more in the 50th anniversary show, which will air on November 23rd. It will be Matt Smith’s penultimate appearance as the Dr, as he’s set to sign off after the 2013 Christmas special.

BBC Dr. Who DalekOh no, the Daleks are coming!

The programme's lead writer and executive producer Steven Moffat said to the BBC: "The Doctor once said that you can judge a man by the quality of his enemies, so it's fitting that for this very special episode, he should be facing the greatest enemies of all."

Matt Smith Dr WhoSmith made for an excellent Doctor

It’s not just the Dr. Who 50-year landmark; the Daleks are also enjoying half a century on this earth, although it’s hard (quite funny) to imagine Daleks celebrating anything. The special will see David Tenant return; his turn as the Doctor was tremendously popular, but it’s not clear what his role will be. Will be play an older Doctor? Billie Piper will also return as Rose Tyler, while Jenna Coleman will continue as Clara Oswald.

BBC Dr. Who DalekIs this Dalek on fire? Or did it cause the fire?

Speculation is still rife as to who will replace Matt Smith as Doctor. The 30-year-old decided to move on much to the dismay of the fans. "It's been an honour to play this part, to follow the legacy of brilliant actors, and helm the Tardis for a spell with 'the ginger, the nose and the impossible one',” he said. “But when ya gotta go, ya gotta go..."