Mary Frances Crosby is an American actress known for her iconic role in one of television's most famous storylines. She is the daughter of the legendary singer and actor Bing Crosby and actress Kathryn Grant. Crosby achieved international fame for playing Kristin Shepard on the prime-time soap opera Dallas. Her character was central to the highly-rated "Who shot J.R.?" cliffhanger, a pivotal moment in television history.