During an on-shore excursion to the nearby Temple of Karnak, a large stone is pushed off a pillar and narrowly misses the Doyles. They are shocked when Jackie joins the cruise, ignoring detective Hercule Poirot's warning to stay away. She also reveals that she carries a small automatic pistol in her handbag and is a crack shot. That night, Jackie confronts Simon in a drunken rage and shoots him in the leg. The next morning, Linnet is found dead from a gunshot wound to the head. A "J" written in blood on the wall above her bed implicates Jackie, but she has a solid alibi as Miss Bowers sedated her with morphia and stayed with her all night.