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Plagued by frightening occurrences in their home, Kelly (Ashley Greene) and Ben (Sebastian Stan) learn that a university's parapsychology experiment produced an entity that is now haunting them. The malevolent spirit feeds on fear and torments the couple no matter where they run. Desperate, Kelly and Ben turn to a paranormal researcher (Tom Felton), but even with his aid, it may already be too late to save themselves from the terrifying presence. Wikipedia