With Philip Durrant dead the atmosphere is tense in the Argyll household. With the aid of flashbacks, we find that Rachel Argyll could be horrid to her adopted children and incensed that two of them were closer than they should be.
Arthur Calgary has certainly placed himself in danger and several people wonder if Leo's aloofness is just a mask.
Sarah Phelps has taken liberties with the ending and the actual culprit from the Agatha Christie book. This is not an issue for me as I have never read the book but I guess some purists would be incensed.
This serial had some wonderful production values, some very nicely staged art direction, maybe the best since the early Poirot days of David Suchet. Easily to overlook when most viewers were looking out for the joints for the cast change and re-filming.
A nice, enjoyable adaptation by the BBC which was a lot better than 'Witness to the Prosecution.'