The best still remains "Death On The Nile". I feel that the "first act" of "Evil Under The Sun" is ever-so-slightly too long. And the very final moments of the film, after the revelation of the killer(s) and AFTER the classic "Jane Birkin walking down the staircase" scene, could have been better executed. Other than that, this is a highly enjoyable film that can be watched multiple times. The first time, you'll like it more for the cleverly conceived mystery, which I would actually classify as one of Agatha Christie's best; it seems almost unsolvable, yet it's so simple when it's all explained. In the following viewings, you'll appreciate more the magnificent locations (I'm still planning to visit "Daphne's place" someday - I'd love to see how and if it has changed over the years), the quotable dialogue, the delightful performances from the entire cast (starting of course with Sir Peter Ustinov, so funny when he's reveling in his own brilliance), the grandiose score. The generally excellent David Suchet "Poirot" series also adapted this story, in 2002, but that version can't hold a candle to this one in my opinion. (***)
Review of Evil Under the Sun
