In the early 20th century in the English-speaking world Arthur Conan Doyle & Harry Houdini were two of the most feted & famous men alive. & their relationship is extraordinary: As strange as it may seem Arthur Conan Doyle the creator of the ultra-rational detective Sherlock Holmes was a believer in Spiritualism. He came to his belief that one could communicate with the dead after his son was killed in World War I & became an expert in the field. Harry Houdini the worlds foremost magician was a friend of Conan Doyles but was sceptical of his belief in the supernatural. Houdini took every opportunity to use his knowledge of illusion to expose psychics who he thought were fakes particularly incensed by their exploitation of grief & insecurity. Based on original research this sensational dual biography of two popular geniuses conjures up the early 20th century & the fame personality & competing beliefs.