The one I chose to watch was produced in 1996 with David Suchet playing Poirot and Hugh Fraser playing Captain Hastings.
The first thing that strikes you is the change of setting: from Berkshire to Windermere (Coniston Water).
The second is the change of time frame: Charles Arundell is attempting to set a new water speed record, so the time frame has been changed from the mid 1930s to around 1949/1950. (Donald Campbell is mentioned in passing).
Here are some of the other modifications
- Hastings and Poirot have come to Coniston Water to watch Arundell's attempt because Hastings is a friend of Arundell's
- Emily Arundell confides her worries to Hercule Poirot prior to her death, and he persuades her to re write her will.
- There is no letter from Lady Arundell to Hercule Poirot (in the book posted after her death)
- after Emily Arundell dies there is a second murder (I won't tell you who)
- the companion Minnie Lawson is involved romantically with the local Doctor - in the book it is Theresa Arundell.
- Bob's ball is always kept in his basket, not in the drawer of the hall stand
- the problem of who becomes the eventual owner of Bob the dog is solved (in the book Poirot has to take him)
- Poirot's own form of justice (mentioned in my book review) does not eventuate because he never gives the murderer a written version of his understanding of what has happened.
Which did I prefer? well, the book actually. I think the suspense was better there and the characters better drawn.