Guarda Streamingcommunity. The Last Sacrifice delves into the real-life 1945 witchcraft killing of Charles Walton—the terrifying event that inspired The Wicker Man and birthed the folk horror genre. This unsettling true-crime interrogation probes into the eerie, enigmatic cultural undercurrents that shaped 1970's folk horror genre, leaving an indelible mark on cinema and public psyche.