Agatha Christie's Poirot: The Underdog

Wealthy industrialist Sir Reuben Astwell is murdered after making a deal to sell synthetic rubber to the Germans, leaving the dapper sleuth wondering whether the motive was commercial or political. Evidence found in his chemical factory could hold the key to the mystery - but Poirot is unsure if the victim's widow can be trusted. Starring David Suchet, with Ann Bell and Bill Wallis