Dr Who - 124 - Arc of Infinity - Synopsis
Dr Who - Peter Davidson - Series 20 - ep 1 - tep 124
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The Doctor's genetic bio-print is stolen from Gallifrey by a traitor, and passed to a mysterious anti-matter alien who then seeks to cross into the ordinary universe by bonding with the Doctor. To prevent this, the High Council sentences the Doctor to death! Can he escape and outwit the mysterious alien?