** Denton's indiscretion with Mary. Was it really an attempted rape or just an experiment to see how a servant girl would react to such a thing?
** Likewise the way Denton is treated after [[spoiler: they discover he's an actor]] could be just them annoyed at his deception - or a way of getting back at him for trying to force himself on Mary.
*** Or as Elsie suggests, they may be afraid that he will repeat their gossip about their and their employers' private lives to the Upstairs.
** Constance calling Mary by her first name. Is it as she said, being unable to pronounce her last name? Or is it her way of showing affection for the girl? She's considerably nicer to Mary than she is to a lot of the other aristocrats.
* FridgeBrilliance: Constance and her spiel about bought marmalade. As she's on an allowance, she's likely not living as luxuriously as some of the others. And rather she can't afford to have servants make marmalade for her from scratch in the kitchen. So she was clearly hoping to enjoy some extra comforts that she couldn't normally afford for her stay.
* HilariousInHindsight: Maggie Smith's bluntness is already hilarious but it gets cranked UpToEleven in ''Film/TheBestExoticMarigoldHotel''.
* OneSceneWonder: Inspector Thompson.
** The scene where Mrs Wilson meets Robert is a lot more understandable when you know that [[spoiler: he's her long lost son]].
** Denton asking Robert lots of questions. On the first watch he just seems to be making friendly conversation. On the rewatch [[spoiler: he's doing research]].
* TearJerker: When the normally [[TheStoic unflappable]] Mrs. Wilson completely breaks down at the end [[spoiler: because she realizes even though she's protected her son Robert from being arrested for murder, she's lost him forever and will never see him again]].
** Even more touching: it's her [[spoiler: bitter enemy/sister Mrs. Croft comforting her by reminding her that at least he's alive. Realizing that Mrs. Wilson gave up her child because she thought it was best for him, not because she was taking the easy way out for herself, causes Mrs. Croft to forgive her sister after all this time]].