Horror film about a troubled teenager who brings terror into the home of a bereaved family. Recently-widowed Helen (Melora Walters) and her two teenage children, Lenore (Johanna Braddy) and Conrad (Jackson Rathbone), move into the remote desert home of Helen's reclusive brother-in-law, Darryl (William Mapother). But their grief soon turns to terror with the arrival of Sarah (Sofia Vassilieva), a mysterious and emotionally-damaged foster child Helen's late husband had promised to take in...