Doctor Antrobus takes time out from running an asylum to fight an unspeakble monster, which kills with its own flatulence.

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 prince to prevent war between Germany and England. But Von Felseck is not as honest as he seems...

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 within a wall – and inside the chest he finds a leather, bone-shaped artefact, which he takes back to his hotel room. After deciphering the latin written on the artefact, he squeezes the object, making it squeak like some kind of ancient dog toy. Now Rex Shepherd will soon find out that something is going to come out to play…