Is the basement room in the shop where they store Stoddard the same room that Ang's coffin was in?
It looked to me like the room in the basement at Collinwood where Jenny stayed for a while. It didn't look to me like the room where Angelique's coffin was, but that doesn't mean anything.
I wondered why the monster didn't leave the room when Paul opened the door, and I also wondered why, having refrained from leaving the room, it didn't kill Paul. The monster's a true Leviathan if ever there was one, but I don't suppose it would ever consent to obey the regulation against killing humans. I decided that the monster did want to kill Paul, and stayed in the room because it couldn't bear to leave behind such a tempting morsel. But then (I further decided) it was physically unable to attack Paul because Paul was a special One, designated to give Carolyn to the Leviathan cause and make everything legal.
What was the beginning of Julia's conversation with Barnabas today? I don't think we saw it. The last time we saw her with him, if I remember correctly, she all but accused him of planning to kill Amy. And now she sees he's different.
Jonathan Frid's a gentleman. When Barnabas got his coat and cane by the front door to Collinwood, he knocked something on the floor, and picked it up and put it back. I think it must have been Carolyn's coat that she later put on. It was nice of Frid not to leave it for somebody else to pick up - or was it that he felt it wouldn't be in character for Barnabas to leave Carolyn's coat on the floor? Either way, Mrs. Johnson would be proud of him.
The monster apparently obeyed Barnabas in letting him take Paul out of the room, an indication that at this point Barnabas does have authority over it. I could make a case that it gave Paul up because it had realized it couldn't kill him, and then went down to the basement because it just couldn't stay away, but I'm not sure I would believe myself.
If Julia is genetically unable to become one of the Leviathan followers, Megan must have a insanely intense genetic predisposition to become one. I guess that's why she was chosen, and Philip was just taken along for the ride.