The show was famous for its cliffhangers, including the Who shot J.R.? mystery. The 1980 episode Who Done It remains the second highest rated prime-time telecast ever.[2] The show also featured a "Dream Season", in which the entirety of the ninth season was revealed to have been a dream of Pam Ewing. After 14 seasons, the series finale "Conundrum" aired in 1991.