Description
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.
Casts:
Peter Davison
Sarah Sutton
Janet Fielding
Anthony Ainley
Nigel Stock
Richard Easton
Keith Drinkel
Michael Cashman
