Nurse
"While Wally was happy there wasn't much wrong with the world, and pints seemed a small price to pay for what he gave us. But don't forget what we gave him. We gave him the knowledge he was important, at least to us....."
Angela Clifford
While investigating a vanishing Concorde at Heathrow Airport, the Doctor and his companions are thrown millions of years back in time, when a mysterious alien called Kalid is trying to control the ancient powers of the Xeraphin.
