DoomwatchSeason 21970 · 13 episodesEpisodes1You Killed Toby WrenQuist's authority is questioned from all directions, and Ridge does some quiet investigations into hybrid science in Norwich.2InvasionRidge and Hardcastle are sent on what seems a simple enough assignment, but stumble onto a major government cover up in an abandoned English manor.3The IslandersDoomwatch become involved with the inhabitants of a small, secluded island who have been forced to leave for the English mainland and are struggling to survive.4No Room for ErrorA deadly new strain of typhoid is sweeping through local schools. There is a treatment, though, and the team at Doomwatch endorse this in spite of its side effects.5By the Pricking of My Thumbs...The Doomwatch team investigates the myth about the XYY chromosome after a schoolboy is expelled for possessing it.6The Iron DoctorA computer oversees the wellbeing of patients at a local hospital. The Doomwatch team look into whether it is saving patients or if something more sinister is afoot.7Flight into YesterdayAfter a long-haul flight Dr Quist's reputation is put seriously in doubt when he arrives drunk to a meeting with the Prime Minister. Is it a simple case of jet-lag, or sabotage?8The Web of FearThe Doomwatch team investigate the mysterious outbreak of a deadly subtropical disease which somehow has cropped up on an isolated island off the coast of the UK.9In the DarkThe death of a young man off the Scottish coast leads to the Doomwatch team investigating a cover up in the case of a sunken ship, and the discovery of a revolutionary life-changing science.10The Human Time BombThe government wants direction for the possible construction of more high-rise apartment buildings. Fay Chantry is asked to live in one and supply a report based on her experiences.11The InquestAn inquest is held into the death of a local girl from rabies. How was she infected? A local woman thinks she knows, and she doesn't believe dogs are involved.12The LogiciansA powerful antidote formula has been stolen near a school full of gifted boys. Are they responsible, and is computer technology somehow to blame?13Public EnemyA young boy dies while attempting to retrieve a ball from a high roof, but the cause of his death is not from falling. Doomwatch investigate.Season 1Season 3Season 4