I don't know why the producers purchased the book rights; other than a few character names, there is NO resemblance to Agatha Christie's taut suspense story. Hercule Poirot, famous for exercising only his little grey cells, leaps about and crawls under barriers. His faithful sidekick Hastings has become an inept security agent, from whom Poirot continually escapes. Poirot actually meets the intended victims except for the first one. Tony Randall does a rather good job playing this miserable excuse for Poirot, which isn't necessarily a compliment. The story and resolution are completely changed, and not for the better. If you're an Agatha Christie fan, pass this one by.