

Poirot himself advises Emily to change her will after she has taken the fall down the stairs.Poirot is there from the beginning because Hastings is a friend of Charles and they have come to Windermere to witness his water speed record attempt.

The plot device of a belated letter sent to Poirot after Emily's death is omitted.Charles, for example, is a speed boat enthusiast making a world water speed record attempt on Lake Windermere. The backstories of some of the Arundell clan are changed.Added plot elements are largely for dramatic interest and do not alter the main premise. The plot is, however, largely similar to the original novel.

Littlegreen House is there and most of the Arundell clan also live nearby.
