When a dinosaur materialises alongside the Houses of Parliament in Victorian London, the Doctor’s old friends, the Paternoster Gang, are relieved when he arrives, seemingly to deal with the creature….

Someone is kidnapping the Doctor’s friends, leading him towards the one place in all of time and space that he should never go.

Something ghastly is afoot in Victorian Yorkshire, as bodies are found with their skin a waxy, glowing red.

The Sontarans continue their evil plot and begin to “choke” the Earth. The Doctor and Donna, now teamed with Martha have to stop them! Can they save Earth before it’s…

Aided by the Rattigan Academy, the Sontarans establish a covert base at the mysterious ATMOS Factory. Can the Doctor stop the Sontarans from unleashing a potent terror that will bring…