For a long time in the world, there have been so-called closed societies: orders, clubs, associations... Their activities - political, religious, occult, civil - have invariably remained secret. Membership in such fraternities was never advertised; it was the privilege of a select few. The activities of secret societies were shrouded in legends, rumors, and various stories; adherents of “conspiracy theories” and “world domination” spoke about them. The ancient knowledge of the Teutonic Order, the mystical “Thule” and “Ahnenerbe”, the rites of the legendary Templars, the bloody education of assassins, a web of Masonic schemes, the mysteries of the Priory of Sion and Opus Dei - shocking revelations of the activities of the most famous secret societies in the world, their history and facts about which no one I didn't know.