The Doctor discovers archaeologists trying to find the lost tombs of the Cybermen.
The Doctor and archaeologists discover the city of Telos isn't as dead as they assumed.
Why should a respected Dutch jeweller lie about a valuable stone which the Saint knows he has been given for cutting? When the man refuses to acknowledge receiving the diamond, Simon determines to find out why.
The Doctor must employ a desperate gambit to keep the evil Grendel off the throne, and the Count has a new pawn to play - Romana.
The Doctor and Romana are swept up in the political machinations of Tara. The Doctor must keep the android "king" running while Grendel plots to use Romana to destroy him.
