Hercule Poirot has fallen out of favour with Scotland Yard. When he receives letters threatening murder and no one is willing to listen, the once great detective must take matters into his own hands.
Drama • Crime
More episodes from Season 1
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Creators
Sarah Phelps, Agatha Christie
Directors
Alex Gabassi
Cast
John Malkovich, Rupert Grint, Andrew Buchan, Eamon Farren, Tara Fitzgerald, Shirley Henderson, Freya Mavor, Jack Farthing, Bronwyn James, Anya Chalotra, Michael Shaeffer