Race reviews what he and Poirot have learned: after Jackie shot Simon, someone took her pistol and, most likely, used it to kill Linnet. That person knew that Jackie would likely be blamed for the crime, but did not know that Miss Bowers would give Jackie morphine and sit with her all night, thus providing her a perfect alibi. Additionally, someone other than Jackie has already tried to kill Linnet with a boulder.

Poirot adds that several people can be eliminated from the list of suspects in the attempt to crush Linnet with a boulder: Simon, Mrs. Allerton, Tim, Miss Van Schuyler, and Miss Bowers.

Race and Poirot interview Jackie. Poirot tells her that he knows she cannot have killed Linnet and asks whether anyone else had a motive. Jackie remarks that Linnet was killed in just the way Jackie had described, so someone really must have been listening in on her conversation with Poirot. Poirot responds: “Yes, it is altogether too much of a coincidence—that Madame Doyle should be killed in just the way you described” (209).

Next, Poirot and Race speak with Simon, who immediately begins to defend Jackie. Poirot asks who else could have wanted to kill Linnet and references Linnet’s remark that she felt unsafe on the Karnak and that everybody hated her.