While Doctor Who is the lead of the show, there is usually a trio of people who make up the stars of the series.

Like Jamie Mathieson, Harness came to Doctor Who during the Twelfth ... of the Daleks," before playing with the Sontarans in "The Sontaran Strategem" and "The Poison Sky." Her Torchwood episodes ...

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. Gallery ...

Colonist Erak was played by Peter Walshe who would return to Doctor Who again in The Masque of Mandragora as a Pikeman. Both episodes of The Sontaran Experiment have been restored and remastered ...