What television series was an adaptation of a novel and had a character played by an actress who is also known for her roles on "ER" and "Desparate Housewives"?
Mary Drake: Mary Drake is a fictional character created by I. Marlene King and portrayed by Andrea Parker in the American television series "Pretty Little Liars". Mary Drake:  "Pretty Little Liars" is a television adaptation of the novel series of the same name written by Sara Shepard, in which the antagonist Alison DiLaurentis has an identical twin sister, Courtney DiLaurentis.
i don't know