What Rough Beast — H.R. Knight

London, 1903. Harry Houdini, the world's greatest escape artist, needs help that can only come from Sir Arthur Conan Doyle, creator of Sherlock Holmes. Together the celebrated debunkers plan to expose Maximillian Cairo, an infamous occultist. But Cairo isn't the fraud they think he is. The power he wields is all too real and all too terrifying. When Houdini and Conan Doyle interrupt Cairo's dark ritual, something is set loose--something that few would believe. An unthinkable evil is running amok, spreading death and madness through the fog-shrouded streets. Can even Conan Doyle and Houdini stop the impossible nightmare they have unwittingly unleashed on a helpless city?