EVIL UNDER THE SUN (1982)
GUY HAMILTON
Plot
Ustinov as Poirot investigates the murder of the universally disliked Arlena (Rigg) on a sunny Adriatic island. All the suspects have airtight alibis and the pivotal clue concerns the woman under the sombrero. A beautifully filmed suspense from the Agatha Christie stable, they don't make 'em like this anymore!