Labeled the "Napoleon of Crime" by an obsessed Sherlock Holmes, Professor James Moriarty is a prominent scientist, a keen analytical mind, and a dabbler in less than savory doings. Two friends and former associates of Moriarty - Benjamin Barnett and his wife, the former Cecily Perrine - are travelling in Europe in early 1891 when they realize that they have become objects of scrutiny from persons unknown. Things turn deadly when they find themselves...