This Documentary That Takes Viewers Inside One Of The World’s Most Sinister Secret Societies — The Ku Klux Klan. Based On An Award-winning Investigative AP Series, The True-crime Documentary Captures The Infiltration Of The Klan In Northern Florida By A Former Army Infantryman Named Joe Moore And Includes Exclusive New Interviews With The FBI Agents Who Oversaw The Operation And Exposes Systemic Corruption.