Dumb Witness Poirot : Season 6 Episode 4
TV-14 ITV 1h 40m
Aired: March 16th, 1997 @ 8:00 PM EST on ITV
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.
