In Sir Arthur Conan Doyle’s “The Final Problem,” Sherlock Holmes asks Watson to accompany him on his manhunt for the notorious Professor Moriarty, who has threatened to kill Holmes if he exposes his criminal deeds. What follows is a deception and suspense-filled chase that takes the duo from England to France and Switzerland, where Holmes and Moriarty finally confront each other face to face in a fight to the death. Intended by Doyle to be the last Sherlock Holmes mystery, this edition features original illustrations by Sidney Paget.