An icebreaker
A Russian-born occultist published a 1,500-page cosmology claiming ancient masters had shown her humanity's real history, told in seven root races across lost continents. A Society for Psychical Research investigator called her letters from those masters forgeries; a later re-examination called his report unfair.
In her 1888 book she claimed to be transmitting an ancient cosmology shown to her by hidden teachers, describing human history as a series of root races unfolding across vast stretches of time and several lost continents.
In his December 1885 report he concluded that letters attributed to her hidden teachers were frauds that she had written herself, and named her one of the most accomplished impostors of the era.
In a 1986 review he found the 1885 report riddled with slanted statements, conjecture presented as fact, and uncorroborated testimony, though he did not conclude the disputed letters were genuinely from her claimed teachers.
In an 1895 published analysis he identified specific earlier books on mythology, religion, and science from which he argued she drew extensive unattributed material.