Its a good book, in my opinion all of Agatha christies books are amazing, just the two things that knock the two stars off are:
1: It was super easy to figure out the killer right at the start
2: Poirot was barely solving the case some other bloke was doing most the work
overall its not too confusing and its quite good thats why it was three stars
This is such a Agatha Christie classic everyone knows Murder on the orient express. the writing was fantastic, it was not hard to follow, it was a good mystery and it was quite hard to figure out who the killer was before it was said