Sherlock Holmes has retired. But when MacDonald asks him to take on another case, he says yes. There have been some mysterious murders, and there are no visible causes for the deaths. At the same time Holmes gets this case, Graf Udo Von Felseck gives him another case: find a young and missing...
Oxford professor Rex Shepherd stays at an out of the way hotel in a secluded English coastal spot. During his stay he follows the directions contained in a mysterious book, venturing over to a Roman temple, which turns out to be a ruined Roman pet cemetery. Here he discovers an old chest hidden...