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. Who is Kalid and what is he hiding? How will the TARDIS crew cope with the loss of Adric? Who get left behind? Find out in the latest episode of The Doctor’s Companion! And remember, BEWARE OF SPOILERS!!
Next: Tom Baker and “The Leisure Hive”!!