In 1922 the friendship between Sir Arthur Conan Doyle, creator of Sherlock Holmes, and Harry Houdini, the legendary escape artist, collapsed when Doyle, a spiritualism believer, urged Houdini to attend a seance with his wife to contact Houdini’s late mother. Offended, Houdini saw the medium’s tricks as deceitful and preying on the emotionally vulnerable.

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