Sarah E. Polley OC (born January 8, 1979) is a Canadian actress, writer, director and political activist. Polley first garnered attention for her role as Sara Stanley in the Canadian television series Road to Avonlea. She has starred in many feature films, including Exotica, The Sweet Hereafter, Guinevere, Go, The Weight of Water, My Life Without Me, The Adventures of Baron Munchausen, Dawn of the Dead, Splice, and Mr. Nobody.