The 24-year-old Polley has acted professionally since the age of 6. She starred in the Atom Egoyan films Exotica and The Sweet Hereafter. She's currently starring in the film My Life Without Me, based on a story by Nanci Kincaid called Pretending the Bed is a Raft. It's about a young, working single mother who learns she's going to die but keeps it a secret. The changes she makes to her life give her a new sense of liberation. Polley also will appear in the upcoming film The I Inside and a remake of the cult horror film Dawn of the Dead.