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In the sixth episode of the season-long continuity "The Trial of a Time Lord," the Valeyard (Michael Jayston) continues to prosecute the Doctor (Colin Baker) for violating the Laws of Time. Videotaped evidence shows the Doctor and Peri (Nicola Bryant) travelling to the planet Thoros Beta, apparently to commisserate with intergalactic outlaw Sil (Nabil Shaban). But the Doctor contends that his mission to Thoros Beta was meant to be beneficial, citing the fact that scientist Crozier (Patrick Ryecart) intended to alleviate the suffering of the planet's leader, Kiv (Christopher Ryan), by using the Doctor's body as the temporary home for Kiv's brain. Will the Doctor be able to prove his point -- or will his erratic behavior, caught on video, condemn him to death? Written by Philip Martin and originally telecast on October 11, 1986, "Mindwarp, Episode 2" is listed in most sources as Doctor Who: The Trial of a Time Lord, Episode 6.