Very fun movie!! Much humor in the 1st part, then more serious. As with most movies, for me, unclear dialogue escapes me, but I didn't lose the whole plot. Be prepared to jump out of your seat with a loud crash or the flash appearance in the mirror with a symphonic blast in tandem. I initially was put off by a taller and thinner Poirot with a bristle broom mustache. But I got over it so that I could hang in for the fun ride. Fabulous Cinema photography! The few views we get of Vienna are stunning. Everybody had a big smile on their face walking out of the theater. Well written and acted and directed.