A war veteran tries to investigate the murder of his son who was working as a Russian translator for the British intelligence service during the Cold War. He meets a web of deception and paranoia that seems impenetrable...
The Doctor and Romana follow a distress signal which leads to the jungle planet Chloris, whose ruthless ruler Lady Adrasta harbors a deadly creature in a pit.
Set during the 1960s in the fictional North Yorkshire village of Aidensfield, this enduringly popular series interweaves crime and medical storylines.