The Doctor meet Professor Parry and his archaeologists on the planet Telos. The expedition is there to unearth the remains of Cybermen who died out long ago. Or did they?
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 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.
Grendel plans two weddings and a funeral to cement his hold over Tara. The Doctor and K-9 race to foil him and save the Time Lady's life.
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.
