David Suchet ("Henry VIII," "The Way We Live Now") returns to his signature role as suave Belgian supersleuth Hercule Poirot in two new mysteries based on the novels by Agatha Christie. Whether he's on holiday abroad, taking a countryside break or simply going about his business near his central London home, Poirot finds himself exercising his "little grey cells" by helping police investigate crimes and murders, whether they ask for his help or not. Mrs. McGinty was killed by a brutal blow to the head, and her lodger James Bentley (Joe Absolom, "EastEnders") is sentenced to hang for the murder. As Poirot joins forces with famed crime novelist Ariadne Oliver (Zoë Wanamaker, Harry Potter) to save Bentley from the gallows, he doesn't realize his own life is in danger. The cast includes Amanda Root ("The Forsyte Saga," "Persuasion").