#marielda while i think the doylist explanation is there was a lot of other information coming at jack in the scene and they just forgot that their character can always tell when someone is lying to them, i like to imagine the watsonian version where hitchcock said "where's castille?" and maelgwyn, with rumpled hair and clothes, replied "uhhhhh in the...guest rooms? she's in the guest rooms" and hitchcock thought, well, that's not my business
