The Most Evil Secret Societies in History examines fifteen of the most notorious organisations the world has ever seen. These are; The Illuminati, an ancient association dedicated to establishing a 'New World Order'; Argentum Astrum, a black magic order formed by Aleister Crowley in 1907; The Thule Society, an Aryan brotherhood behind the Nazis; Muti Magic, practitioners of ritual murder; Ku Klux Klan, an American white supremacist cadre; The Tongs, violent Chinese society linked to organised crime; Solar Temple, international suicide sect uncovered in the 1990s; The Hashishim, a murderous Muslem sect at the time of the Crusades; The Mau Mau, a ruthless tribal society in pre-Independence Kenya; Aum Shinrikyo - Japanese terrorist survivalists; Odessa, a Nazi organisation perpetuating the vendetta against the Jews; SPK, an anarchist terrorist group active in the 1960s and 70s; The Thugees, Indian devotees of Kali, the Goddess of Death; Camorra, a clandestine Italian network with Mafia links; and The Hell Fire Club 18th Century English aristocrats dabbling in sex and politics.