Who is she? The queen of swindlers, who cannot be followed in the darkness of a seance even with the help of glowing bracelets, or a real medium who speaks with the voice of spirits? The mysterious Margery Crandon, the ironic and attractive wife of a Harvard surgery professor, whose unmasking became a matter of honor for the greatest illusionist Harry Houdini. A sweet blonde with heavenly eyes, who charmed the jury of the magazine “In the World of Science” in the fight for a prize of five thousand dollars and threatened the King of Magicians with death... In a dangerous battle, which was watched on both sides of the Atlantic, the stakes were too high...