The TV adaption of one of Christie's masterpieces includes some major flaws. Several of the suspects are dramatically changed with no obvious reason. Why should the nice little Rhoda be turned into a monster? And why is Dr. Roberts chasing men instead of women? And why add a figure as Superintendent Wheeler to the cast? David Suchet is trying to speed up the investigation, but everyone else seems to slow down the tempo. Mtrs. Oliver glooms large here, but will be even more significant in the future. Some of the episodes in Agatha Christie's Poirot is brilliant, some is good, and most are average. This one fails to convince those addicted to Christie's puzzles.