 Ali Larter , who starred in the 1999 film Varsity Blues , was cast as female lead Claire Rivers . " The film shows how easy it is to turn on someone , to blame someone when you 're scared , " Larter said . " It 's also about trusting your intuitions and yourself " . She defined her part as " that girl who has a lot of loss in her life and has fallen for herself , and had made a life within that . She 's an artist , she lives by herself , and she 's kinda holding to her grip for what the world has given her " . 
