 "Karen", the first of the three sitcoms set at 90 Bristol Court, presented the exploits of 16-year-old Karen Scott (played by Debbie Watson) and her tomboyish little sister Mimi (Gina Gillespie).The two girls' activities continually confounded and frustrated their parents (Steve and Barbara, portrayed by Richard Denning and Mary LaRoche).The theme song was performed by the Beach Boys.