This is book number 1948 in the Hercule Poirot Radio Dramas series.
A full-cast dramatization of Agatha Christie's novel featuring Belgian sleuth Hercule Poirot
Gordon Cloade is killed in a London air raid, and his vast fortune passes to his young wife Rosaleen. Five of his relatives are desperate to get their hands on Cloade's money, and Rosaleen begins to fear for her life. The prospects for the Cloades improve when they discover that Rosaleen had a previous husband who perished mysteriously in Africa. Then a mysterious stranger appears in the village, saying that he has something to communicate to her, but the following morning he is found dead. Was he, in fact, her husband? It's up to Hercule Poirot to investigate.