Poirot carefully unravels these seemingly unrelated complex clues and concludes that Jacqueline and Simon are plotting to kill Rinnet.

Poirot carefully combed these seemingly unrelated and complicated clues, and finally came to the conclusion that Jacqueline and Simon conspired to kill Rinnet. Finally, like other detective stories, Jacqueline and Simon committed suicide.

The reason for two murderers:

There are two murderers in this case because Jacqueline really loves Simon, so she is willing to do anything for him, including murdering her good friend. Simon killed Rinnet and Jacqueline killed Louise and Booker at the same time. Louise saw Simon and Booker killed Louise because she saw Jacqueline.

Simon has always insisted that he is innocent. From the beginning, he created the illusion of being shot, and Poirot was there when he interrogated others, so on the surface, he didn't have time to kill anyone at all. Jacqueline has always played an important role here. Simon and Jacqueline planned everything from the beginning and jointly created an alibi for the original murder. This design is very clever.