"Isis very much unveiled, being the story of the great Mahatma hoax" by Edmund Garrett is a critical examination of the Theosophical Society, likely written in the late 19th century. The work investigates the claims of mysticism surrounding the organization, particularly the notion of "Mahatmas" or spiritual masters purported to guide its practices, suggesting that these figures are more deception than divinity. The narrative delves into figures such as Madame Blavatsky and Annie Besant, exploring the underbelly of their teachings and the credulity of their followers." The opening of the book introduces the author's intent to expose what he perceives as the farce behind the Theosophical Society's claims and the notion of Mahatmas. Garrett discusses the growth of the Society and its prominence, particularly under Besant, and how it relies heavily on alleged communications from these supposed Eastern sages to legitimize its existence. He recounts previous investigations into Blavatsky's activities that revealed trickery rather than supernatural phenomena, setting the stage for a broader critique of the Theosophical movement’s reliance on mystification and the gullibility of its adherents. Through this narrative, Garrett seeks to bring truth to light and warn the public against the allure of what he perceives as a manipulative spiritual scam. (This is an automatically generated summary.)