I do love Grayson's delivery of the line "Mrs Johnson is a repressed hysteric." It really looks as if she's biting back a big blurt of laughter.
David has dialogue where he explains to Amy who Matthew Morgan was, but all he says is that "he was somebody who used to work for us." Imagine if he had said, "Yeah, he was my best buddy for awhile, but then he kidnapped Miss Winters, kept her bound and gagged in a secret room behind the bookcase in the Old House, and was about to make mincemeat of her brains with an axe when Josette's ghost gave him a heart attack."
I tried imagining the conversation in which Barnabas and Julia have to explain to the kids: "David, we know we said Aunt Elizabeth was dead, but we were wrong. We came *this close* to burying her alive, but luckily we didn't, and she woke up and she's upstairs now having a nice tall brandy."
Maybe the difficulties trying to come up with plausible references to some of the bygone storylines that wound up in rather lurid scenarios partly accounts for the weird "amnesia" around such characters as Joe, Vicki, Jason, et al.
G.