Death on the Nile is a detective novel written by Agatha Christie, first published in 1937. It stars Hercule Poirot in his vacation to Egypt where a rich beautiful young lady was shot to death in her cabin in the middle of the night with a letter "J" painted with her blood on the wall.
With a lot of things going on in the story, the writer keeps things interesting by having the culprit repeatedly gets upper hands against Poirot. Even if one of them is quite a stretch for the sake of a dramatic moment. Once again, we get to see the methodical detective battles his brilliance against the clever murderer.
It may not be the writer's best work, but it's a fun read nonetheless. You may also want to read Murder on the Orient Express before reading this one.