<P> During the murder investigation, some passengers describe hearing a faint "pop" on the night of the murder, while some recall hearing a splash shortly after midnight . Miss Van Schuyler claims that she saw Rosalie throw something overboard, and that someone had stolen her velvet stole . Jacqueline's pistol is recovered from the Nile, wrapped in the missing stole . During his interview with Linnet's maid at Simon's bedside, Louise states that she saw nothing on the night of the murder but would have "if" she had left her cabin . He also learns that the maid's predecessor was set to marry an engineer on the boat, until Linnet revealed that he was married already, for which he vowed vengeance against her . Jacqueline comes to apologise to Simon, Poirot noting that she is still very much in love with Simon despite having shot him in the leg . </P> <P> Race announces that a search will be made of the cabins for the missing pearls . Miss Bowers returns the pearls, confiding that Miss Van Schuyler is a kleptomaniac and had taken them from Linnet's cabin . Poirot examines the necklace and finds it to be a fake, the real pearls having been stolen sometime earlier . Later, he confronts Rosalie about her mother being a secret alcoholic and that Rosalie was seen throwing overboard her mother's hidden cache of spirits . Although she admits to this, she firmly denies she saw anyone leaving Linnet's cabin . The maid Louise is found stabbed to death in her cabin, clutching a piece of a banknote . Poirot and Race deduce this was part of a blackmail payment so the maid must have seen something on the night of the murder . Mrs. Otterbourne enters Simon's cabin, declaring she knows who killed Linnet and Louise . Simon yells at her to tell him who it is, but before she can finish her story, she is killed by a shot fired from the deck outside . The shooter disappears, Poirot and Race only find the discarded gun, which Poirot recognizes from Pennington's luggage . </P> <P> Poirot clears up the lesser mysteries of the case: Pennington had illegally speculated with Linnet's holdings, and had planned to replace the stolen funds before she came of age . Her marriage forced him to take desperate measures and to attempt to dupe her into signing legal documents to exculpate him . When this failed, he attempted to kill her with the boulder at the temple ruins . Fanthorp was on the cruise merely to investigate him on behalf of Linnet's British solicitors, who were suspicious of Pennington's intentions . Tim Allerton stole the pearls from Linnet but did not kill her . Allerton agrees to return the pearls and to reform his ways, asking Rosalie's hand in marriage . Richetti is found to be a foreign agent and the man Race was seeking . Finally, Poirot reveals that Linnet's murder was committed together by Jacqueline and Simon, who had planned it months in advance . </P> <P> Jacqueline deliberately missed Simon, who faked the bullet wound by using a bottle of nail polish containing red ink . Simon asked that Dr. Bessner be called to help him, and that Jacqueline be looked after during the night, thereby giving her an alibi . Once the lounge was empty, Simon rushed to Linnet's cabin with the discarded gun, shot her in the head, and used her blood to write the "J" on the wall . Rushing back, he then shot himself in the leg, using Van Schuyler's stole to silence the gun, so that Bessner would find a real wound and confirm he couldn't move . After reloading the gun with two bullets in order to make it appear that only one shot had been fired, he wrapped it in the stole and tossed both into the river . Their plan nearly fell apart when Louise hinted to him that she knew he was the murderer as she had witnessed him leaving her mistress's cabin . When Simon was alone with Jacqueline, he informed her of the blackmail . Later, under the pretense of bringing Louise her money, Jacqueline stabbed her to death with one of Bessner's scalpels . However, Salome Otterbourne spotted her leaving Louise's cabin, and deduced that Jacqueline was the murderer; when Simon yelled at Salome later, he was actually communicating to Jacqueline, in the next cabin, that she had been seen and was about to be exposed . This prompted her to steal Pennington's gun and kill Salome before she could reveal what she saw . </P>

Who did it in death on the nile