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"The Zero Clue" is a Nero Wolfe mystery novella by Rex Stout, first published as "Scared to Death" in the December 1953 issue of ''The American Magazine''. It first appeared in book form in the short-story collection ''Three Men Out'', published by the Viking Press in 1954. ==Plot summary== Leo Heller, a mathematics expert who uses his knowledge of probability to assist his clients with their problems, tries to hire Wolfe for a difficult case. He believes that one of his clients may have committed a crime, but does not want to tell the police of his suspicions without evidence to back them up. Wolfe angrily refuses the job, remembering a past incident in which he lost a client to Heller, but Archie offers to stop by the next day for a preliminary discussion. The following morning, Archie goes to Heller's private office at the agreed-on time but finds it empty, with the door open. Taking note of several pencils lying in an unusual pattern on the desk, he asks the five clients in the waiting room if any of them have seen Heller in person, but all of them say no. That evening, Inspector Cramer arrives at the brownstone with news that Heller has been found dead, shot through the heart and stuffed into his office closet. Accounts of Heller's movements suggest that he was killed shortly before Archie entered the office. Cramer demands to know Wolfe's involvement in the case for two reasons: an envelope in Heller's desk, marked with Wolfe's name and containing $500 cash; and the pencils, whose pattern he re-creates as best he can. Archie corrects it slightly, tearing the eraser off one pencil and placing it in the middle of the pattern. Cramer is convinced that they stand for Wolfe's initials when viewed from the side, even though one grouping has too many strokes to form a W. Wolfe dismisses Cramer's claims, keeps the $500, and briefly looks through a book from his shelves before locking it in a desk drawer. He asks Cramer to bring in Heller's five clients as well as Susan Maturo, a woman who had left Heller's building just as Archie entered to meet with him, and urges Cramer to watch for instances of the number six. Wolfe and Cramer question these six people one by one, learning of their various reasons for wanting to see Heller. They take a particular interest in Susan, a nurse who had worked in a hospital where a bomb exploded a month earlier, killing 302 people. She had thought of hiring Heller to find the culprit, but changed her mind at the last minute and began to think of hiring Wolfe instead. The number six figures in every person's account, but a remark by one client - about Heller's winning tip on a racehorse named Zero - prompts Wolfe to have everyone brought back to his office. With the pencils laid out on his desk as they were on Heller's, Wolfe explains that the book he consulted earlier was on the history of mathematics. The two groups of pencils were arranged to symbolize a three and a two, and he originally assumed that the eraser between them stood for multiplication; hence his focus on the number six. However, the mention of the horse's name made him realize that the eraser was meant to stand for a zero. Before he was killed, Heller had laid out the pencils to form the number 302 - the death toll in the hospital bombing. Aside from Susan, the only client with any substantial connection to that hospital is Jack Ennis, an inventor who had unsuccessfully tried to persuade the staff to use a new X-ray machine he had designed. Wolfe conjectures that he set the bomb as revenge for this rejection, learned that Heller might have become suspicious enough to call in Wolfe, and killed him. As Ennis is placed under arrest, Archie reassures Susan that he is guilty, and a jury reaches the same conclusion at his trial two months later. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「The Zero Clue」の詳細全文を読む スポンサード リンク
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