<P> While visiting an ancient temple, Linnet narrowly avoids being crushed by a falling rock . Jacqueline is initially suspected, but she is found to have been aboard the steamer at the time of the incident . During the return voyage, Poirot finds his friend Colonel Race has joined the steamer . He reveals to him that he seeks a murderer amongst the passengers . Later that night in the steamer's lounge, Jacqueline's resentment of Linnet boils over, leading her to shoot Simon in the leg with a pistol she possesses . She is taken back to her cabin by those who witness this, where she is confined, while Simon is treated for his injury; in that time, Jacqueline's pistol, which she dropped, disappears . The following morning, Linnet is found dead, having been shot in the head, while her valuable string of pearls has disappeared . No one in the cabins on the opposite side heard or saw anything . Poirot notes two bottles of nail polish in the victim's room, one of which intrigues him . Jacqueline's pistol is later recovered from the Nile; it is found wrapped in a stole belonging to Miss Van Schuyler, which was stolen the previous day, and which had been fired through . </P> <P> When interviewing the maid Louise in the cabin in which Simon is resting, Poirot notes an oddness in the words she uses . Soon afterwards, she is found stabbed in her cabin . Mrs. Otterbourne later meets with Poirot and Race in Simon's cabin, claiming she saw who killed the maid; Simon declares loudly his surprise at this . Before she can reveal who it is, she is shot dead from outside the cabin . Poirot soon confronts Pennington over his attempted murder of Linnet at the temple - he came to Egypt upon learning of her marriage to Simon, to trick her into signing documents that would exonerate him of embezzling her inheritance . However, he did not murder Linnet on the steamer, despite his gun having been used in Mrs. Otterbourne's murder . Race later arrests Richetti, the man he sought . Poirot recovers the missing pearls from Tim, who substituted an imitation string of pearls for the real ones . The imitation pearls were later stolen by Miss Van Schuyler, a kleptomaniac, and returned by Miss Bowers . </P> <P> When alone with Simon, Poirot reveals him to be his wife's killer . The murder was not his plan, but Jacqueline's; the pair were still lovers . Their scheme was to steal Linnet's money - the pair staged their break - up, whereupon Simon married Linnet . On the night of the murder, Jacqueline deliberately missed Simon, who faked his injury with red ink . While everyone in the lounge was distracted by Jacqueline, he took her gun that she had deliberately discarded, went to Linnet's cabin, and shot her . He then returned to the lounge and shot his own leg, to give himself a genuine injury . Louise and Mrs. Otterbourne were murdered by Jacqueline, who was warned by Simon when the plan was going awry - Louise witnessed Simon entering Linnet's cabin that night, and gave him a coded message when Poirot was interviewing her; Mrs. Otterbourne witnessed Jacqueline entering Louise's cabin before stabbing her . </P> <P> Poirot reveals what led him to his theory: the ink was contained in a bottle of nail polish he noticed in Linnet's cabin; Simon reloaded the gun with two spare cartridges before he disposed of it, as Poirot realized that three shots were fired that night; the stole was used to silence the gun when Simon shot his own leg; Poirot suspected pre-meditation for the murder, because he slept deeply through that night's events - he had been drugged through his wine that evening . As the steamer arrives back in Cairo and the passengers disembark, Jacqueline shoots herself and Simon with another gun she possessed, so they may escape the gallows . When pressed, Poirot reveals he had known she had a second gun, but had sympathetically chosen to allow her to take her own life . </P>

Who was the murderer in death on the nile
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