Overall I enjoyed this episode. In this case, the original story had a resolution that was clever, but even so, there were never very many suspects involved in this crime, Hastings himself asserts, "It'll remain a dark mystery." That wouldn't have worked well for television, so the writers threw in a few extra characters to be suspects. Nothing wrong with that, but I experienced some confusion in keeping these extra suspects straight, being that they were all men, all dressed in a similar fashion, and all of roughly the same build. Having said that, the most enjoyable aspect of this episode for me was the sight of Poirot sick in bed, hence the title of this review. His overdramatic reaction to being ill is exceeded only by his irritated reactions to everyone else, and poor Hastings gets the brunt of it. But by the end, his health is restored, the culprit has been caught and Poirot's good humor has been restored.