The houseboat on the river Styx is the afterlife’s hippest meeting spot, and it attracts some of history’s greatest luminaries: William Shakespeare, Confucius, Napoleon Bonaparte, George Washington, and Socrates have all spent time together there. But such illustrious men also attract less savory characters from the past. One of these scoundrels, the great pirate Captain Kidd, seizes an opportunity to pick up some cigars from London with the houseboat. Now the vessel is missing, and there’s only one dead man skilled enough in deduction to track down Kidd and the boat-the world’s foremost detective, Sherlock Holmes.