The story of the Mississippi Sovereignty Commission, a secret agency created by the state during the 1950s to spy on its citizens and maintain segregation. Included: remarks from author Rick Bowers ("Spies of Mississippi"); civil rights activists Margaret Block, Lawrence Guyot, Bob Moses and Hollis Watkins; Rev. Ed King, author Neil R. McMillen ("Dark Journey"); journalist Jerry Mitchell; Rep. Bennie Thompson (D-Miss.); and former Mississippi governor William Winter.