In 1949, when a white farm-wife alleged she was assaulted by four black men on the rural roads of Lake County, Florida, town Sheriff Willis McCall identified four suspects: Samuel Shepherd, Walter Irvin, Earnest Thomas and Charles Greenlee. The documentary "The Groveland Four" chronicles the injustices faced by these defendants at the hands of the Jim Crow-era U.S. criminal justice and court systems, employing historical re-enactments, witness accounts, and narration by actor Courtney B. Vance.