As I watched this episode I had a huge feeling of scenes having been deleted. Suddenly Barnabas cared greatly about his parents, and though there may have been scenes showing that previously, they can't have been memorable because I don't remember them. (There's a lamentable failure of logic in the last part of the previous sentence, but let it pass.)
The scene in which Maggie exorcised Angelique from Julia was interesting. If I ever watch this series again (which seems doubtful right now), I'll want to compare Maggie's words and actions with those of Trask the first time we saw him, when he was performing an exorcism of his own. Right now all I know is that Maggie looked cleaner than Trask.
The scene in which Trask was murdered was another case of scenes appearing to have been deleted. Barnabas tells his father to make sure Ben knows that Vicky is to be hung, and next thing we see, Ben is leading Trask to the Old House. I can connect the dots, sort of - occasionally - more or less - but if you've got a story to tell, why not tell the whole story? Yeah, I know, the writers had very limited time - but right now I wish they had jettisoned the whole leap to 1790 and spent more time developing the story in the present. Maybe they thought they couldn't keep the viewers without some time travel, but I think they could have tantalized the viewers with a few more of Barnabas's memories like the one he had of Josette's death near the start of the series, and then they could have ended the season with the beginning of Victoria's journey to 1790, leaving viewers to wonder over the summer how it would all go together.