A good crime novel might be material for a fine movie or even for some entertaining distraction, as the hunt for the killer is a plot technique that keeps the attention focused. How they made such a gruesome movie out of an Agatha Christie novel is an art in itself.

As not having read the novel, I'm not sure if the plotting mistakes are due to the writing or the adaption, but either way, they are there and aren't going away. The poison in the pills that the major never takes? Why would he take one now? The killer not trying to hush the possible poisoning but even informing the police about it? The exhumation based on the fact that a pill bottle was in his bathroom that wasn't there before? The hotel nurse telling someone in a highly suspecting way that she saw the killer? Why not tell the police or even her 'new friend' miss Marple? Dramatic effects like the exhumation during the night, some tiny voodoo and the nervy score cannot save the lack of drama.

Badly scripted, awfully acted and Barbados seems a perpetually overcast island with some techno-echo-crickets chirping away every time we are supposed to witness outdoor scenes at night. This isn't even entertaining anymore, this movie is a crime itself.