Ray Grover

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.

Arthur Payne, recently out of prison, meets a stranger, Theo Gaunt, on a train and explains his situation. A few days later another stranger makes a curious proposition. Arthur should participate in a fake robbery and remove some imitation jewellery from the stranger's own safe.