Mawdryn Undead: Part Four 1983
7.8 211 Mawdryn and his fellow immortals - stuck in ceaseless cycles of mutation and deterioration - are quite determined on the Doctor sacrificing his future for their sakes, giving him the choice between helping them or stranding Teagan and Nyssa with them on their infinite journey. The Doctor, however, seeks a third option.
Runtime: 25
Starts: Peter Davison, Sarah Sutton, Janet Fielding, David Collings
Director: Peter Moffatt