[s19e15] The Visitation 3 -

In the third part of Doctor Who story "The Visitation," the Doctor is held captive by Terileptils intending to use an enhanced plague to exterminate humanity in 17th-century England. Tegan and Adric work to evade a dangerous android while Nyssa attempts to liberate the brainwashed villagers, with the episode exploring the aliens' advanced technology and ruthless plans.

This episode originally aired on February 22, 1982, and features the Fifth Doctor, Adric, Nyssa, and Tegan. [S19E15] The Visitation 3