Branagh directed as well, in a classic Hollywood style buttressed by CGI for some of the large-scale visuals with which he opens up Christie's locked-room mystery. Well, locked-train mystery.
The all-star cast has about three lines each, which is pretty much how the movie has to work unless it's going to be 8 hours long. Critical backlash to this film puzzled me. It's pretty much exactly what it has to be, and it's far superior to the stiff 1974 version that netted Ingrid Bergman a sympathy Oscar for Best Supporting Actress. Recommended.