Doctor Who - The Silurians

Deep below an atomic research facility in Wenly Moor, radiation begins to inexplicably emanate from damage caused by... who or what? Doctor Who (Jon Pertwee) himself -- along with sidekick, Liz -- is called in to investigate. When it becomes apparent that the sabotage is not caused by any human, the Doctor is forced to reckon with a power that has been sleeping since the Ice Age.