介绍：When a series of apparently minor thefts plagues a university hostelry run by Miss Lemon's sister, Poirot is recruited to investigate. Celia Austin, a pharmacological major, confesses that she is a kleptomaniac and responsible for most of the thefts but denies stealing several objects including a stethoscope, light bulbs, and a student rucksack. Furthermore, she claims to know the other thief and vows to help return the missing items. Unfortunately someone substitutes an overdose of morphine for one of her sleeping powders, and she takes the identity of the thief to the grave. Japp connects the murderer's m.o. with a cold case he had investigated ten years earlier, but the prime suspect in that crime, a powerful statesman, now lies dying in a local hospital. Despite numerous obstacles, Poirot is able to link the killing to an international diamond smuggling ring but not before the murderer claims more victims.

介绍：Dr. Mortimer asks Sherlock Holmes to help protect Sir Charles Baskerville who has returned to England to take his place at the family seat following the death of his uncle, Sir Charles Baskerville. Sir Charles died of cardiac exhaustion and Dr. Mortimer believes he was frightened to death. There appears to be a curse on the family dating back nearly 200 years to when Sir Hugo Baskerville was supposedly killed on the moor by a huge hound. Holmes dismisses the supernatural elements of the case but there are a sufficient number of odd events to pique his interest. It is apparent that Sir Charles is being followed and one of his shoes was stolen at his hotel. At the family estate, the servants have suddenly resigned and the lady cook is crying herself to sleep every night. Holmes soon realizes that someone is making sure the legend becomes real. Written by garykmcd