misery for both of us. It would be simply foolish and I'm not going to do it. [Chapter IV] After thinking the matter over again and again, Swinburn resolves to poison his uncle with potassium cyanide. He takes all kinds of precautions when he buys the poison. Then he makes a pill that looks like one of Crowther's anti-indigestion tablets. He buys a bottle of those pills, buries the poisoned pill in that bottle, and, over dinner at his uncle's, spills a glass of wine which gives him the opportunity to exchange bottles without anyone noticing. Charles Swinburn is particularly proud of his perfect alibi. On the following morning he books a three-week cruise of the Mediterranean. When he is informed of his uncle's death, he is in Naples, Italy. To his surprise, his uncle took the pill not at home but on his first (and last) flight, the 12.30 from Croydon: The family had been alarmed by a report stating that Elsie had had an accident in France, and Crowther had insisted on coming with Elsie's father and their daughter. On arrival in France he had been found dead. An inquest is held, but Swinburn feels quite safe when no one seems to implicate him in the case. However, some time later he is approached by Weatherup, Crowther's butler, who claims he has seen him exchange the bottles, and who starts blackmailing him. Again, Swinburn sees no other solution than to "take that desperate remedy" and kill the butler. This time he cannot be as subtle as when planning his uncle's death. He brutally slays Weatherup with a piece of lead pipe and dumps his body in a nearby lake. Soon afterwards he is arrested, tried, and hanged. One of the interesting aspects of the novel is the insight the reader gains into the workings of a criminal mind. In particular, Swinburn's rationalization along utilitarian argumentative patterns must be mentioned in this context: Then he told himself that all this morality business was only an old wives' tale. He, Charles, wasn't tied up by these out-of-date considerations! What was politic was right. What was the greatest good of the greatest number? Why, that Andrew should die. What about all the men that were going to be thrown out of employment? What about the clerks? What about poor old Gairns? What about Gairns's invalid wife? Andrew Crowther's useless life could