The Amy Berg-directed documentary West Of Memphis — about the now-famous trial, conviction and eventual release of the West Memphis 3 — is largely based on private investigators and forensic testing financed by Peter Jackson and Fran Walsh. The pair produced the docu with West Memphis 3 member Damien Echols and his wife Lorri Davis. Some of the evidence presented paints an overwhelming picture that the trio was railroaded while the killer of three 8-year-old boys in Arkansas in 1994 remains free. Sony Pictures Classics is releasing West Of Memphis on December 25.

Related: Q&A With ‘West Of Memphis’ Producers Jackson And Walsh