"Secret Societies of the Middle Ages" is a fascinating book written by Thomas Keightley, which reveals to the reader the mysterious world of secret organizations of the Middle Ages. The author explores various secret associations, their history, customs and influence on the events of the era. The book reveals the secrets and riddles of alchemists, Templars, Freemasons and other secret brotherhoods that existed in the Middle Ages. Thanks to this book, the reader will be able to get acquainted with unknown pages of history and fall in love with the mysteries of the past.