With riches accumulated from an American crime spree, Professor Moriarty proceeds to annihilate his enemies. He murders the leaders of Europe's underworld one by one, then prepares his most hideous revenge for his arch-enemy, Sherlock Holmes. Will he succeed in this most terrible plan? In this vivid, suspenseful novel of London-underworld crime, John Gardner has created another brilliant novel in his acclaimed series pitting the Napoleon of Crime, James Moriarty, against mystery fiction's Great Detective, Sherlock Holmes.