The genesis and development of the Sontaran race through the history of the series, as told by some of the actors and production team involved. This specially produced documentary includes ...

Martha Jones summons the Doctor back to modern-day Earth, but an old enemy lies in wait. How scary is the episode? With Michelle Ryan. Stop the attack! Read exclusive adventures. Next Time ...

The Sontaran Experiment: Part 1 The Doctor looks up from his work. Note the sonic screwdriver (right).

Martha Jones summons the Doctor back to modern-day Earth, but an old enemy lies in wait. Meet the new Doctor! See the Doctor regenerate! ...of the Tenth Doctor. Get the latest updates Next Time ...

Doctor Who (1963–1996) Season 12, The Sontaran Experiment: Part 1 The Sontaran Experiment: Part 1 Arriving on Earth, the Doctor, Harry and Sarah meet a group of stranded human colonists.