This is not one of the best movies based on a Agatha Christie novel but i have seen worse. As for Ustinov as Poirot well...i'm getting tired of all those "fans" who claim that Suchett is the "definitive" Poirot, or that Ustinov is the better one. I enjoy both of them as i think both put their own stamp on the part and both have made Poirot movies that were either good or mediocre. This one is not as good as Evil under the sun or Death on the Nile but it still provides you with 90 minutes of entertainment. Most of the acting is so so. I did like Jean Stapleton as Ariadne Oliver but Ustinov has done better in the other Poirot movies i mentioned. Good for a rainy Sunday afternoon.
Review of Dead Man's Folly
