Topic aside, is this show the zenith of period adaptation? I really think it might be. Ignoring that its tone went off the rails a little with series 9, they filmed almost every Poirot story and studiously crammed them into a chronological order with its own internal logic, and every set, costume, hairstyle, dialog choice, prop, and setting was almost perfectly chosen so that they truly feel natural in the story and for the actors. I guess it shouldn't be high praise that, for example, actors are put into period-accurate clothes which actually fit them, but we all know it's far from typical.