Maybe some restless spirit's aura--or some interesting mushrooms? 

Poor David! Barnabas doesn't pass up this golden opportunity to question David closely without anyone else nearby. David grows increasingly terrified until rescue arrives in the form of Burke. David hurls himself into Burke's arms. And Burke notes the real terror in David's last look at Barnabas.

Vicki makes peace between Barnabas and Burke, each of whom tries his polite (in front of Vicki) best to find out why the other decided to look at Eagle Hill. Vicki says that what's important is that David is safe. So now Barnabas gets credit for finding him, thus increasing Vicki's admiration even though she is engaged to his Hated Rival.

Up in his room, David is eating a rather inadequate-looking sandwich while Roger tries to get the truth out of him. David tries to turn the conversation to Barnabas, and Roger gives up. With real kindness, he tells David to go to sleep, but his warmth doesn't include a good-night hug. In all fairness, Roger did hug David when he came back to Collinwood--maybe he thinks he’s filled his quota for now.

Wilie defends David to Barnabas, but Barnabas decides that David's curiosity must be put to rest--permanently. As he looks out the window, wishing David "pleasant dreams," he seems the embodiment of evil.

We have one of the many great fight scenes between Barn and Julia as she tries to keep him at the Old House for another injection. Julia accuses him (correctly) of jumping to conclusions in assuming that David know what he is. Barnabas agrees and says with utter calm, That’s why I want to find David and question him. I don’t want to harm David, Barnabas claims, but he’s been seeing far too much of Sarah, and children are always telling each other secrets. As he opens the front door, he comments, It would be a pity if David has to be done away with. I was getting rather fond of him. But if I have to choose between sentiment and survival, he adds with perfect sang-froid, I’ll choose survival. Even Julia is shocked at this declaration and points out that maybe David has already been found.

Barnabas has begun to accept the concept of women doctors. He remarks, For a professional person and a doctor, it’s surprising how many traits you share with Willie--squeamishness, for example. She retorts, I’d hardly call it squeamish, not wanting to see a child die at the hands of a v-- She stops herself just in time. A what? Barnabas asks her quietly. Julia warns him, If any harm comes to David, you’ll be writing your own death warrant. There may be one or two other death warrants, Barnabas answers, regardless of what happens--and you can pass that on to Willie when you see him.

At Collinwood, Vicki is wearing the unfortunate Mondrian-style orange tent dress. Unknowingly, she pushes Barn's buttons when she worries that the maniac who kidnapped Maggie might have David now. He decides to join the search. Take care in the dark, Vicki warns him. Barnabas reminds her, You forget that I’m more used to the dark than most men. No harm will come to me.

We have another great scene, this one with Barn and the dotty old caretaker, who remarks on Barn's resemblance to the famous portrait. It must have been published in a newspaper or magazine--surely the humble caretaker wouldn’t be a guest at Collinwood!

The caretaker says he heard the voice of a child coming from the wall of the Collins mausoleum. He adds, But there's only one child buried here--little Sarah Collins. Yes, yes, Barnabas answers impatiently, I know. When the caretaker asks how he knows about her, Barnabas snaps, Because I am her-- I am a Collins, he finishes, I know all about the family history. Barnabas says he wants to go to the mausoleum--maybe the voice will talk to him. You mustn’t go there alone at night! the caretaker protests. Barnabas answers, The night holds no dangers for me. The caretaker is inclined to disagree, saying, The night holds unseen dangers for every living soul. Barnabas indulges in a tiny, ironic smile.

Poor David is very cross by the time Sarah finally shows up and tells him how to get out. But he goes from the frying pan straight into the fire--that is, he runs right into Barnabas's arms!

I'll say again that I don't think poor Sarah has no idea what Barnabas is. All she knows is that he's not acting like the brother she used to know--and love. She may not have seen him kill Jason McGuire, for example, but somehow she gets a vibe or some other hint whenever Barn has done something terrible. Maybe that's why she tends to arrive only after the fact. Later on, if I remember, she'll get better at interpreting these vibes and shortens the time between vibe reception and acting on it.

Barnabas and Willie's assumption that Sarah knows that Barnabas is a vampire is the driving force behind their efforts to find her and shut her down.

The same probably holds true when she's looking for someone--Maggie or now David. She probably gets some kind of vibe about them and has to orient herself in time and space to find them.

Dr. Woodard knew Julia Hoffman BEFORE Maggie was even kidnapped. She--still "Hoffman…HE" at the time--was the one he called in to analyze the sample of Maggie's blood. I think Woodard, Maggie and Joe have the idea that Sarah is somehow connected to whoever kidnapped Maggie, but I doubt if anyone would think Sarah was the perp.

Dr. Woodard tells Julia that Sarah's doll looks brand new, even though no one has made a doll like it for over a hundred and fifty years.

AND Elizabeth is still in Boston, hooray!

Quentin and Carolyn both survived the disaster at Collinwood, Quentin because he wasn't there, and Carolyn-- who knows?

We already know that Quentin is to all intents and purposes [spoiler]immortal,[/spoiler] but no explanation is ever given for Carolyn's survival. Maybe her mother sent her away or died saving her and she was able to escape--that would be very characteristic of Elizabeth. In any case, Quentin and Carolyn have had about 25 years in which to go mad. 

If I remember, Roger's absences are usually explained as business trips on behalf of Collins Enterprises and usually take him all the way to-- Boston. (Don't get me wrong--I've been there twice and liked it both times!)

I also thought that Barnabas's near bite of Vicki was very well done.

Carolyn and Vicki wonder if they should phone Roger and Elizabeth, who are away in Boston. Hooray for Elizabeth! And it's also great that she started her travels right away. Roger hasn’t been seen since the costume party.

At the Old House, Barnabas has to call Willie TWICE, so he's already in trouble even before he hurtles down the stairs at what seems like amazing speed. No doubt terror gives wings to Willie's feet! Even so, Willie is getting increasingly bolder about speaking up. I don't know if Barnabas would kill David outright, but he certainly would have no scruples about scaring him really thoroughly.

Vicki FINALLY connects all the dots and realizes that Sarah was the little girl at the costume party. I think the costume party was the only time Vicki ever sees her. Maybe Sarah felt drawn to her because Vicki was wearing Josette's gown--a gown that Sarah easily could have seen Josette wearing in life.

I really liked the way JF portrayed Barnabas's calm exterior as he plays a very private, very desperate game of beat the clock while Joe and Sam insist on searching the Old House and Joe even suggests breaking the door down. It's another good instance of Barn's Great Lie--he's probably just as frantic on the inside as Willie is on the outside. He is rescued by Carolyn's arrival--but doesn't escape the suspicious looks that Joe and the sheriff give him as they leave. Still better than being burned to a crisp by the rising sun, I guess.