Kelly and Lynn Farmer are the two main protagonists of the Halloween television film "Double, Double, Toil and Trouble". Their goal is to save their good Aunt Sophia from her evil twin sister, Aunt Agatha, and to get their parents (who are deeply in debt) out of their situation of losing their home. Kelly and Lynn are played by Mary-Kate and Ashley Olsen, respectively, who also played Aunt Sophia and Aunt Agatha, respectively, as juveniles.