A higher justice than the rule of law

This is 3rd Murder on the Orient Express I've seen thus far this year. Kenneth Branagh's 2017 version, Sidney Lumet's 1974 version and, finally, this Philip Martin's take (2010) where David Suchet is the genious detective Hercule Poirot. Many consider David Suchet as the right man on the job and I'd easily agree, but I have to witness the Japanese adaptation Oriento kyuukou satsujin jiken (2015) first. A few others as well.