As Haddad explains via robust prose, in 1848, the sisters first experienced spiritual “rappings”-think cryptic knocks on the walls and floors, like mystical Morse code-at their family’s farm in the hamlet of Hydesville, New York. Margaret and Kate Fox, the subjects of Hubert Haddad’s fascinating new novel, Rochester Knockings, appear prominently in Houdini’s exposé and are often cited as the architects of modern Spiritualism. Houdini never did reconnect with his departed mother before his own passing from peritonitis in 1926, but the text he left behind, a damning condemnation of Spiritualism’s manipulative practice, consisting of chapters devoted to mediums, collected letters, and correspondence, continues to stand as a kind of Bible for those leery of psychics and other parapsychological phenomena that perpetually linger in popular culture. Over thirty years, Houdini attended hundreds of séances in the United States and abroad, always with a skeptical-yet-open mind, hoping, as he put it, “to speak to my sainted Mother who awaits me with open arms to press me to her heart in welcome, just as she did when I entered this mundane sphere.” In his 1924 book, A Magician Among the Spirits, the late Harry Houdini set out to demonstrate the counterfeit nature of Spiritualism: the belief that the dead can correspond with the living.