Doctor Who

Season 20, Episode 3

Episode Title: Arc of Infinity (3)

Air Date: 1983-01-11

Overview:

Something seemed amiss about the Doctor's execution, so the Castellan has Commander Maxil discreetly but fully look it. Meanwhile, as the Doctor meets the anti-matter being inside the Time Lord Matrix, Tegan and her cousin's friend run afoul of a bird-like alien back on Earth.