Tense, exciting, mysterious, engrossing, entertaining, as good as it gets. It's not just the scenes in the house that are good, it's the flashbacks and daydreams that are beautifully crafted. The editing is precise, the story so well told, that this ranks as one of the finest pieces of television drama I have ever had the good fortune to see. Thank you so much BBC. Please make some more of Agather Christie's stories.
Such a disappointing ending, it felt a lot of the characters changed their personalities in just one episode! Also the view/interpretation of the English aristocracy reached 110% cringe levels in this episode!