The Murder on the Orient Express twist ending explained that this is not just an Agatha Christie murder mystery but quite possibly her very best. The film is a twisted take on the genre she owned that pushes iconic detective Hercule Poirot to the limits of his morals. Kenneth Branagh's 2017 movie, which he both directed and starred in, is a glossy, star-studded, but mostly faithful take. The first film of the new Agatha Christie franchise brought Hercule Poirot back into the public eye.

Murder of the Orient Express introduces viewers to Poirot in Jerusalem, where he's solving a crime with typically Sherlockian logic, but that's all preamble to the real case. Forced to travel back to England to help with a previous investigation, he takes the Orient Express along with a surprisingly large group of other passengers, considering it's in the height of winter. Things immediately feel off, and...