A century after Lucy escaped from a run-down industrial building, she returns with her friend Anna to exact revenge on the family that held her captive there. But revenge brings revelations that go far beyond what Lucy had told Anna. The closer they get to the painful truth, the more they realize that they are trapped in a nightmare from which they cannot escape... where a martyrdom awaits them.
Based on Pascal Laugier's cult French extreme horror film from 2008, Blumhouse Productions, in the utmost secrecy, allowed the Goetz Brothers, Kevin and Michael, to handle this polished Hollywood remake, starring Bailey Noble (True Blood), Troian Bellisario (Pretty Little Liars), and Kate Burton (Grey's Anatomy).