Let he who is without sin not enter the frame
He’s known for his long movies, so it shouldn’t be a surprise that Sidney Lumet’s Murder on the Orient Express feels sort of arduous, but the main misfire, as Agatha Christie herself observed in part, is Inspector Poirot (and his ‘stache), played by an overacting Albert Finney in an otherwise delicately treated adaptation that, in classic Christie fashion, implicates the entire world in the practice of evil, letting everyone off the hook but only because otherwise there would be no one left to hook.
Precious Bodily Fluids 
Such an iconic image though, I saw the film only once when I was about ten. Almost 40 years later now I open your blog and, before the image was full on the screen, I knew exactly where it came out from.