Agatha Christie's Poirot Season 6 Episode 4 Dumb Witness 1994
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Poirot and Hastings are at Lake Windermere for an attempt on the world speed-boat record. An elderly widow is hurt by falling down stairs, then later killed by poisoning with phosphorus.
- Released: 1997-03-16
- Runtime: 50 minutes
- Genre: Crime, Drama, Mystery
- Stars: David Suchet
- Director: Brian Eastman, Nick Elliott, Agatha Christie
