All places hide mysteries, but the city of Oxford, with its secret museums and peculiar professors, is richer in mysteries than any other. James Moriarty tends to get into trouble at the smallest opportunity. But when he comes across girls who see spirits, swindling students, a bunch of keys that will open anything and suspicious individuals who use the air as a weapon... this time trouble is looking for him. A new and hilarious mystery starring the naughtiest boy of the nineteenth century.