"The Infernal Device - A dangerous adversary seeking to topple the British monarchy places Moriarty in mortal jeopardy, forcing him to collaborate with his nemesis Sherlock Holmes." "Death by Gaslight - A serial killer is stalking the cream of England's aristocracy, baffling both the police and Sherlock Holmes and leaving the powers in charge to play one last desperate card: Professor Moriarty." "The Paradol Paradox - The first new Moriarty story in almost twenty years, it has never before appeared in print."--BOOK JACKET.