Devil's Knot is a 2013 American biographical crime-drama thriller film on DVD, directed by Atom Egoyan.
Three young boys playing in the West Memphis, Arkansas woods never come home for dinner. In the rush to convict the killers, police focus on a trio of devil worshipping teenagers. As the mother of one of the murdered boys (Witherspoon) tries to come to grips with this unspeakable tragedy, she desperately believes that the killers have been found. It is only when an investigator (Firth) reveals that the evidence doesn’t add up, that the community is forced to face the reality that the true killer might still be out there.