Sci-fi drama. When the Doctor arrives in Victorian London he finds a dinosaur rampant in the Thames and a spate of deadly spontaneous combustions.

When the Doctor arrives in Victorian London he finds a dinosaur rampant in the Thames and a spate of deadly spontaneous combustions.

Who is the new Doctor and will Clara's friendship with him survive as they embark on a terrifying mission into the heart of an alien conspiracy?

The Doctor has changed. It's time you knew him.