Sontarans return to terrorise Doctor Who
Doctor Who is to face arch enemies the Sontarans again, 35 years after the warriors made their first appearance on the BBC show.
The episode will mark the return of Freema Agyeman as Martha Jones, after she finishes three guest episodes of Doctor Who spin-off Torchwood.
‘Martha Jones returns in a fantastic storyline and the fans will get to see her in a whole new light,’ the actress said.
A host of celebrity cameos are lined up for the new series, including Catherine Tate, Felicity Kendal, Phil Davis and Peter Capaldi.
The new series will include a meeting between David Tennant’s Doctor and Agatha Christie.
The Ood are also expected to be revived in an episode entitled Planet of the Ood.