Martyrs (2008)

Martyrs is a 2008 French-Canadian drama horror film begins with a young girl, Lucie Jurin, as she escapes from a disused abattoir where she has been imprisoned and physically abused for a long time. The film is her quest for revenge against the people who kidnapped and tormented her as a child leads her and a friend, who is also a victim of child abuse, on a terrifying journey into a living hell of depravity.