I've enjoyed various works by Christie over the years, but this is not one of them. The characters are flat cardboard cutouts constantly gibbering at one another. The plot somehow manages to be both tedious and ludicrous, and the denouement beggars belief.

I cannot believe this was once considered a good mystery with a satisfactory ending. Only finishing this through sheer pig-headed doggedness I realise now I shouldn't have bothered. Considering reading a Christie novel? Then I implore for the love of little kittens, please choose anything but this.