317 pp. Inspiration for the 2022 Ridley Scott/Kenneth Branagh film. "Hercule Poirot was aboard a Nile steamer when the tragedy occurred. At first it seemed obvious who the murderer was, but almost at once the complications multiplied. ...And yet really, Poirot thinks, as he comes to journey's end, he should have known from the beginning--the clues were already in his hands."