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.
as The Doctor
as Liz Shaw
as Brigadier Lethbridge-Stewart
as Dr. Quinn
as Major Baker
as Dr. Lawrence
as Miss Dawson
as Spencer
as Masters
as Dr. Meredith
as Captain Hawkins
as Roberts
as Davis
as Doris Squire
as Squire
as Silurian
as Silurian
as Silurian
as Silurian
as Silurian
as Silurian (voices)
