As the New Year begins, a terrifying evil is stirring from across the centuries of Earth's history. As the Doctor, Ryan, Graham and Yaz return home, will they be able to overcome the threat to planet Earth?
Episode rating
Cast of episode
- The Doctor
- Graham O'Brien
- Ryan Sinclair
- Yasmin Khan
- Lin
- Mitch
- Aaron
- Police Officer Will
- Security Guard Richard
- Farmer Dinkle
- Mum
- Teen 1
- Teen 2
- Call Centre Polly
- Sergeant
- Daleks
- Cafe Owner
- Siberian warrior
- Zak
- Airport Traveller
- Allied Soldier