An older Harry Houdini, past his prime, is dealing with one failure after another. Arthur Conan Doyle, known for creating "the world's greatest detective", sits in at a seance and believes every moment of it. They were friends once... Now, after a number of young girls have been found dead, Houdini is drawn into investigating the murders. Knowing he won't be able to do it alone, Houdini asks his old friend, Doyle, for help. What they find will shock and disturb and leave a lasting impression on both of them.