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Rating: 2/10 (1 November 2018)

DO NOT WASTE YOUR TIME.
I have tried to watch this film twice and fell asleep 5 times in the middle. It is extremely dull - and that is coming from the perspective of someone who's never seen the original / read the book and has no idea who the killer is - I should have been on the edge of my seat!
(I should mention that I used to watch watch the tv show as a kid so I know a bit about what Poirot should be.)
There are absolutely no clues for the audience and Poirot seems to have some magic source of information that, we audience, are not permitted to to know. There is no feeling of suspense at any point in the film. The sound track was exceedingly dull. The 'evidence' Poirot uses to wrap up the mystery at the end is completely new news to anyone watching the film bar perhaps one or two things but certainly not enough to make the viewer feel in any way a part of the experience. By the end of the film the whole thing just seemed wildly improbable to the point of absolute ludicrousy.
The cast is (obviously) great but I felt all their performances fell flat - no matter how good a cast, you just cannot make up for a dull script, especially in a murder mystery!
Anyone who thinks this film is any good must just be a fan of pretty posh people walking around in pretty posh clothes in a pretty posh set (with a couple of good CGI effects thrown in for good measure) because, honestly, anyone with a brain would be bored out of their mind.