A story that is a bit too complicated, even if it's interesting. A solution that did not fully satisfy me. A few typical Christie tricks, which, especially for those who know Poirot enough by now, make you guess if not everything, at least something.
In short, not one of Christie's best novels. But always, always, always, a very pleasant book to read, because in any case it conquers you and leaves you with bated breath! ^ _ ^