The series travels around the country staging a free antiques valuation day for people to attend with treasured objects and family heirlooms; the most interesting are selected for filming by a team of specialists considered the best in their field.

The time ring takes the Doctor, Sarah and Harry back to Nerva, but to a period many thousands of years earlier than their previous visit. The station is currently acting as a beacon warning space traffic of the existence of a new asteroid orbiting Jupiter.

The Doctor arrives in a Victorian Gothic mansion where strange things are afoot. The master of the house has been replaced by a sinister Egyptian and sinister mummies roam the grounds.

The Doctor inadvertently ruins a game.

The Doctor must participate in a game.

Prehistoric monsters live underground with highly intelligent man-like reptiles.