Doctor Who

Season 20, Episode 2

Episode Title: Arc of Infinity (2)

Air Date: 1983-01-05

Overview:

With an anti-matter being trying to enter the universe through the Doctor, risking the destruction of everything, there is only one clear course of action for the High Council of Time Lords to take: execute the Doctor. Meanwhile, Tegan arrives in Amsterdam and hears about what's become of her cousin from his unscathed friend.