“A Caribbean Mystery” by Agatha Christie

This one was like a season of White Lotus, with the ritzy tropical resort as a backdrop and murder in the foreground. Miss Marple's thoughtful nephew, Raymond West, gives Aunt Jane an all-expenses-paid trip to the West Indies for some much needed rest and relaxation, never imagining that she would find herself embroiled in mystery yet again. (I mean, does he not know his aunt at all??)

This time, the story starts with murder long past. Fellow resort guest Major Palgrave loves to subject any available listener to his vast arsenal of stories from his past, one of which includes the claim that he possesses a photo of a murderer. When Major Palgrave turns up dead, Miss Marple knows that murderer must be present, and she must act quickly to ensure he (or she!) does not kill again.

I made my first guess on page 17, but by page 44 I had decided that first guess was wrong and I moved on to two other people. By page 139 I decided I was right about one of those two (but not the other one). But I also suspected two others, so I’m not sure it counts. 

I also knew who the woman by the creek was. But this was because of the short story "A Christmas tragedy" in the book The Thirteen Problems, not because of my genius.