Aided by his two assistants Jamie and Victoria, the Doctor lands the TARDIS on Telos, last resting place of the infamous Cybermen. There he discovers a band of archaelogists on a secret expedition to unearth the reason for his old enemies' extinction. In the underground shadowy depths, they find the icy tomb. A whole army in hibernation. A threat to no one, if the temperature remains low. But if the traitor in their midst gets his way, things could really heat up. Originally broadcast in 1967 and then lost, this unique four part adventure starring Patrick Troughton - the Doctor's 2nd incarnation - was only recently discovered. It is now available for the first time on this special BBC Video which includes an exclusive interview with director Morris Barry.