The Cult of.. looks behind the scenes of Doomwatch and reveals the inspiration for their the stories and discovers the team behind the programme knew they were upsetting the government and big business and Robert Powell explains why he left the show at the height of its popularity. The documentary also demonstrates that despite the show's foresight, how they misjudged the changing gender politics of the early 70’s and also exposes a behind the scenes rift between the show's creators and its producer. (thetvdb.com)