How could one man -- Peoples Temple leader Jim Jones -- persuade 900 people to commit mass suicide by drinking cyanide-laced Kool-Aid in the jungles of Guyana? This penetrating portrait of the demented preacher attempts to answer that question. Using never-before-seen footage and audio accounts of two Jonestown survivors, documentarian Stanley Nelson paints a chilling picture of a social experiment gone horribly awry.