BBC teases 'Doctor Who' special plot

The BBC has teased viewers about the plot of Steven Moffat's upcoming Doctor Who Christmas special.

Controller of drama commissioning Ben Stephenson revealed that the episode, which guest stars Michael Gambon and Katherine Jenkins, will be based on Charles Dickens's 1843 novel A Christmas Carol.

Stephenson said: "Matt Smith and Karen Gillan captivated audiences in their debut series and Doctor Who's clever twist on the much loved A Christmas Carol will thrill BBC One viewers this year with special guest stars Sir Michael Gambon and singing sensation Katherine Jenkins joining Amy and the Doctor for an unforgettable present!"

Dickens appeared as a character in the Series One episode 'The Unquiet Dead' in 2005, with Simon Callow playing the Victorian author.

Writer and executive producer Steven Moffat also revealed that the episode will include a "honeymoon" and be like "all your favourite Christmas movies at once".

Speaking on her first day on set, Jenkins said: "I'm over the moon to be involved in the Doctor Who Christmas special.

"I can't quite believe it as it's a part of the family tradition at the Jenkins household. I heard the news that I got the role on my 30th birthday and it was the best birthday present ever!"

Filming will continue until August. It has been suggested that the working title for the episode is 'Father Who?'.