Investigating mysterious power failures and a death at an underground research centre, The Doctor discovers a colony of Silurians - prehistoric, intelligent reptiles who went into hibernation before man evolved. But now they have woken up, and they are prepared to wipe out mankind with a killer plague to get their planet back.
Released: Mar 14, 1970
Runtime: 175 minutes
Genre: Science Fiction, Drama, Adventure
Stars: Jon Pertwee, Caroline John, Nicholas Courtney, Fulton Mackay, Norman Jones, Peter Miles
Crew: Timothy Combe (Director), Malcolm Hulke (Writer), Barry Letts (Producer)