Sharon and Billy, sister and brother, are typical adolescents growing up in a tract home in 1950's Southern California. But when fifteen-year-old Sharon finds herself pregnant, their adolescence comes to an abrupt end. "The Magic Theater continues to bolster its reputation as a producer of, and magnet for, first-rate drama. SHARON AND BILLY, a delicate and even amusing study of brother-sister incest ... Bowne has etched an eloquent appraisal of a Southern California family of four in the late 1950s ... The incest incident which leads to fifteen-year-old Sharon's pregnancy is handled gently and almost amiably ... Bowne suggests its occurrence, a subtle scripting which makes the shock value more humane than heavy-handed. The parents never do learn who fathered Sharon's baby, but the possibility that they might serves to stir audiences. The tender manner in which Billy inquires, gropingly, about his offspring is a gem of a scene." -Herb., Variety