Question: who was the murderer in death on the nile

title: Death on the Nile
text: 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 . 

Answer: answer: When alone with Simon, Poirot reveals him to be his wife's killer. Louise and Mrs. Otterbourne were murdered by Jacqueline.