Martyrs (2015)

Anna rushes to help her friend Lucy, who was viciously abused as a young child, clean up the aftermath of the revenge she visited upon her abductors 15 years later. Was Lucy the only victim? Are they alone in this idyllic home? What nightmares lie beneath the tranquil facade of this house of horror? In search of the truth they uncover a sadistic cult organization determined to make a Martyr of each subject rather than a simple victim.—Robert Schiffman