The show centered on the mischievous Baby-Doll, starring Mary Dahl, who stole the hearts of audiences everywhere. Dahl started out when she was ten, and due to a rare condition called hypoplasia (which prevented growth and puberty), she looked the same ten years later at age 20. Other cast members included Tod Baker as Baby's dad, June Winthrop as Baby's mom, Tammy Vance as Baby's older sister, Suzy, and Brian Daly as Baby's older brother, Tibby. However behind the scenes, Tod admitted he did not like working with Mary, whom he regarded as ratings hungry and a selfish brat.