S4, E14: Appealing to both young and old, and regularly bringing in massive audiences, Doctor Who has firmly established itself as the family drama in the UK since 2005 with a thrilling mix of adventure, epic storylines, scary monsters and great writing. The award-winning time-travelling adventure returns with a Special penned by Russell T. Davies. It's Christmas Eve in 1851 and Cybermen stalk the snow of Victorian London. When the Doctor arrives and starts to investigate a spate of mysterious deaths, he's surprised to meet another Doctor, and soon the two must combine forces to defeat the ruthless Miss Hartigan. But are two Doctors enough to stop the rise of the CyberKing? The Next Doctor was the second most watched programme during Christmas 2008, attracting over 13 million viewers, a 52% audience share.