Dan Starkey

Sontaran warriors set their sights on the Earth and its inhabitants. Part 1 of 2.

As poison gas suffocates the Earth's population, the Doctor and UNIT team members work to eliminate the threat. Part 2 of 2.

The Doctor and his new companion, Clara, fight to save Christmas from the villainous Doctor Simeon and his army of evil snowmen.

The Doctor's greatest secret is discovered.

Clara is alone in Victorian London with a man she doesn't know, a dinosaur in the Thames, and a spate of deadly spontaneous combustions. The Doctor has changed. It's time you knew him.

Bodies with waxy, glowing, red skin are found in Victorian Yorkshire.