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Note: In the UK and Australia, this story was released as part of the U.N.I.T Files box set instead.
As the Brigadier and UNIT fend off increasingly vicious attacks from gigantic prehistoric reptiles, the Doctor investigates just how these monsters are appearing without warning. But when Sarah Jane is kidnapped, the Doctor realizes perhaps even his oldest friends can’t be trusted.
Who is responsible for the devastating carnage? And what will Sarah Jane do when she awakes aboard a spaceship many light years from home?
DVD EXTRAS INCLUDE:
Originally transmitted January 12 - February 16, 1974