Good grief they really outdid themselves with the constant and mostly unnecessary flashbacks. It seemed like at least every other scene was a flashback of some sorts. The whole thing should've been wrapped up in two episodes at most. They really did their hardest to make this ordinary and plain story last for an eternity. A story they have probably done a million times already and a story that would've easily been done in a single one hour Poirot episode. They really go overboard with the red herrings as well. Is there a reason why every single person in the house has to act like a complete lunatic and weirdo?