Catherine inherited her father's huge inheritance, plus she was very business-minded and combined with a wealth of money. The only thing that was flawed was that she had not yet met her true destiny. Catherine's best friend Diana was lonely at the time, but fell in love. The economic downturn has left Jack unemployed and the two destitute.
To make ends meet, Diana introduces Jack to Catherine as a real estate agent. Unexpectedly, three months later, Catherine and Jack actually came together and got married. Diana, who has been robbed of her boyfriend by her friends, is furious and follows and harasses Catherine and Jack. Detective Poirot, fearing that diana would continue like this, would cause a problem between the three of them, and persuaded her to give up. Unwillingly, Diana was unwilling to give up the opportunity to torture the two.
Soon after, Catherine, who was about to go on her honeymoon after her marriage, secretly booked a cruise to the Nile in order to get rid of Diana, and Catherine and Jack even boarded the ship at the last minute, but did not expect that the ghostly Diana had been waiting on the boat for a long time. Throughout the honeymoon, Diana, in the name of being a tour guide for the two, always followed them unswervingly. When the crowd came to a temple to see it, they suddenly dropped a large stone from the sky, almost killing Catherine and Jack. Everyone suspected that Diana had done it, but it was not realistic, because she could not have climbed to the top of the temple so quickly.
In the evening, everyone played cards on the boat, and the atmosphere was very harmonious. Diana reappeared, and after saying something unpleasant, Catherine went back to her room alone to sleep. After Catherine left, Diana remained indomitable and began to struggle with her ex-boyfriend Jack, even pulling out a pistol and hitting Jack. The crowd panicked, and Jack told the people around him to call the doctor. The next morning, an accident happened, and Catherine was found shot in the back of the head and died in bed in the bedroom. There is also the letter J written in blood at the head of the bed, the first letter of Diana. According to the doctor's identification, Catherine died last night, and there is no doubt that Diana is the biggest suspect, because she has enough motives to remember Catherine. However, that night, Diana had been in the room and had witnessed, so there was no time to commit the crime. And the gun that hit Jack also fell to the ground.
As if the murderer is a lawyer, Poirot, who has mastered all the clues, says that the real murderer is Jack, and it turns out that through the interrogation of the maid, he finds that the people in the room during the interrogation have someone to woo the maid At that time, there was only Poirot and his assistant, Jack and the doctor in the room. Poirot then locks the suspect on his boyfriend, seemingly impossible, after Poirot's perfect reasoning, Diana and Jack admit that in order to get property, the two have already planned everything. In the end, when Diana was brought in and asked to kiss Jack goodbye, she took advantage of the fact that everyone was not paying attention, shot and killed her boyfriend, and committed suicide, causing everyone to sigh.
Love, it should be beautiful. Love mixed with conspiracy will lose the purity of love. Let evil dwell in the heart, use love as an arrow, and pierce into the hearts of others, and in the end it may only harm others and harm yourself.