The daughter of Rick Nelson (son of Ozzie and Harriet Nelson) and Chris Harmon (daughter of football legend Tom Harmon and sister of actor Mark Harmon), Tracy Nelson made her film debut at age five as one of Henry Fonda's daughters in Yours, Mine and Ours (1968). Her movie career didn't really pick up until her teens, when she began appearing in such films as Footloose (1982) and Down and Out in Beverly Hills (1986).
Before that, Tracy was seen as Jennifer DeNuccio, a zoned-out valley girl on the 1982 teen-misfit TV sitcom Square Pegs. Seven years later she was playing Sister Stephanie, a spunky young nun with a gift for sleuthing and a predisposition for disguise on the weekly television crime drama Father Dowling Mysteries. Between 1987 and 1989, Nelson battled with Hodgkins disease. She has continued her film career through the 1990s, appearing in television series and made-for-television movies. ~ Hal Erickson, All Movie Guide. 