Karen MacKenzie record for an actress on American primetime television. Karen's storylines focus on family troubles, addiction and kidnapping. In her early years on the serial, the character had much more of an "edge" in order to test the audience on who would be the most like J. R. Ewing (Larry Hagman), the primary character of its parent series "Dallas". (The bad girl role would later be taken on by Abby Cunningham, Karen's sister-in-law.) Over time, she became much more of a wholesome character. Series creator David Jacobs said "Karen is the tent pole. She says the things I want to say.
Dallas (1978 TV series) episodes: Larry Hagman (seasons 3-14), Patrick Duffy (seasons 4-8 and 10-14), Linda Gray (seasons 9-12), Steve Kanaly (seasons 10-12) and Ken Kercheval (seasons 13-14). "Dallas" originally aired on Saturday nights when it debuted as a regular series. Within a month, the show was moved to Sunday nights, where it would stay until halfway through the season, when it took a Friday-night slot. "Dallas" remained on Fridays until the show ended in 1991, alternating between 9 p.m. and 10 p.m. airings. The "Who Done It" episode of "Dallas" that revealed who shot J.R.?, the famous 1980 cliffhanger, received the highest domestic