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
Larry Hagman "Who shot J.R.?", the 1980 cliffhanger season finale in which J.R. is shot by an unknown assailant. The person who pulled the trigger was later revealed to be Kristin Shepard (played by Mary Crosby) in the "Who Done It?" episode which aired on November 21, 1980; Kristin was J.R.'s scheming sister-in-law and mistress, who shot him in a fit of anger. At the beginning of the fourth season later that year, audience and actors were trying to guess "Who shot J.R.?", now one of fictional TV's most famous questions. During the media buildup, Hagman was involved in contract negotiations, delaying