Larry Hagman was briefly replaced by Donna Reed for the 1984–1985 season, before Bel Geddes returned in better health for the 1985–1986 season. By the end of its 14th season in 1991, ratings had slipped to the extent that CBS decided to end "Dallas". Hagman was the only actor to appear in all 357 episodes. He had also made five guest appearances on the "Dallas" spin-off series "Knots Landing" in the early 1980s. Some years after "Dallas" ended, Hagman appeared in two subsequent "Dallas" television movies: "" in 1996, and "" in 1998. Hagman reprised his role as J.R. Ewing in TNT's
Dallas (1978 TV series) (season 14) Dallas (1978 TV series) (season 14) The fourteenth and final season of the television series "Dallas" aired on CBS during the 1990–91 TV season. In alphabetical order: Additionally, the two-part series finale, "Conundrum", featured cast pics of following stars right after the opening sequence: Besides the returning supporting cast, Deirdre Imershein (Jory Taylor) joins the series in a major story-arc. A minor character in the Paris arc (played by Padraic Terence Duffy, Patrick's son) is called Mark Harris, the name of the character played by Patrick Duffy in "Man from Atlantis". Showrunner Leonard Katzman, Arthur Bernard Lewis, Howard Lakin, Lisa