The thrilling conclusion to the New York Times best-selling series the Chicago Tribune called "Sherlock Holmes crossed with Buffy the Vampire Slayer" sends the eccentric detective and his indispensable assistant into the heart of a war between magical worlds. The fate of the world is in the hands of detective of the supernatural R.F. Jackaby and his intrepid assistant, Abigail Rook. An evil king is turning ancient tensions into modern strife, using...