The Moth Diaries

Synopsis: Acclaimed director Mary Harron returns with the chilling story of Rebecca (Sarah Bolger), a young girl who, haunted by her father's suicide, enrolls in an elite boarding school for girls. Before long, Rebecca's friendship with the popular Lucy (Sarah Gadon) is shattered by the arrival of a dark and mysterious new student named Ernessa (Lily Cole). Rebecca, whose overtures of concern are rejected by Lucy, finds herself lost and confused. Rebecca starts to suspect that Ernessa is a vampire, but, despite the suspicious deaths that begin to occur, her fears are treated as simple girlish jealousy. As the bodies of young girls pile up and the line between reality and the supernatural starts to blur, Rebecca decides to take matters into her own hands and get rid of Ernessa.     Source: IFC