The reveal of the Aged face was enjoyable and how Barnabas freaks out over the change. Barnabas says he must revert to being a vampire. I wish they had explored a little more what exactly was happening with the treatments and what effect they had.

What does dry ice dropped in a boiling cauldron do? Run the equipment?  Why is Barnabas strapped in the chair? Is this  something new or just unseen before. Barnabas says he feels as if there is new blood in his veins.
Julia ditches the medallion for some reason and uses a crystal to hypnotize Vickie. They go to the old house cEller where the arches are gone being used in Julia's lab. She is to never forget and never remember which leaves her with a vague uneasiness. Julia must be crazy to think that Barnabas will choose her over Vickie, but it isn't the first time someone was a fool for love.
Barnabas' hand has aged shockingly in the finale. 

Mrs. j hears the plane hs gone down. Why they would be reporting on a flight into the wilds of South Am. In a remote Maine town seems odd.  Barnabas feels Julia sees Josette as a rival.  There're is lots of talk about the starless, moonless night.  It adds to the atmosphere of doom. Joan has a hard time with her lines. I like the original Josette storyline. It would have been interesting to see it played out. The copyright is now 1967. Apparently they figured this out sometime during the strike.

Julia appears to be practicing a combination of black magic and junior high science to cure Barnabas and provide power to the Old House in her new Lab which is made up from various parts of the basement sets.
The big vat which she drops dry ice into looks like a cauldron. Has this been a regular treatment or something new. Julia later fumes with Jealousy over Vickie who reveals she loves Collinwood.  A hooded figure soon reaches out to Julia. It disappears before she turns around and reacts to it.

Barnabas appears quite gleeful when he says death was due to heart attack.  He says the fatal curiosity is cured. Banabas and Julia from this time period seem far removed from ones from late 1968 when I originally started watching.  When I caught this on PBS in the 80's, it was a surprise as was that Julia was interested in Barnabas as more than a friend.

Barnabas declares it is preposterous that Julia could be romantically interested and of course it is revealed she is by her actions. It always seemed a bit strange that Julia who was working on curing Barnabas, was so invested in keeping Vickie away.
The drawing room chair is in Julia's room. It was originally in Vickie's. Maybe just to explain it and to not picture Mrs. Johnson heaving and sighing as she moves furniture from room o room and floor to floor that there is a set.  Julia's room is the one next to Vickie's and across from David which I had never noticed before.
I find it interesting  Julia has a schoolgirl crush on Barnabas and keeps her notes in a red diary a girl would use.

the new caretaker is not as crazy as the old one. I noticed that they seemed to have wiped out the names on the Stockbridge graves although it is clearly the same crypt as was used before during the Laura Story.
Woodard confronts Barnabas about Sarah with not any thought of safety. He and Julia obviously didnt take any courses in college about common sense.