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.
Genres: Crime , Drama , Mystery
Keywords: 1930s , based-on-novel-or-book , belgian , detective , investigation , murder-mystery , period-drama , private-detective , private-investigator , suspenseful , united-kingdom , watch-series-online