Maggie Evans Collins is staying with her sister Jennifer in New York.* She writes a letter to her estranged husband, Quentin Collins. Maggie says that there is no point in being married if they aren’t going to live together, so she is going to talk with Jennifer’s lawyer. She crumples the letter up and tosses it in the wastebasket. A moment later, the telephone rings. It is Quentin’s sister, Elizabeth Collins Stoddard. Liz tells Maggie that she must come home immediately.

Quentin appears to be having a heart attack. Liz found him writhing in pain in the drawing room. He was accompanied by someone Liz had never seen before. Eventually this person identified himself as Barnabas Collins, a distant cousin of theirs. Barnabas told Liz that Quentin had collapsed with severe chest pains, and urged her to call a doctor. She telephoned Cyrus Longworth, a friend of Quentin’s.** Cyrus doubts that Quentin will recover. Barnabas suggested Liz call Maggie, saying that she could get a flight and be at the great house of Collinwood within hours.***
The source of Quentin’s trouble is his first wife, the late Angelique. Angelique has risen from the dead, murdered her identical twin sister Alexis, and taken Alexis’ place as a houseguest at Collinwood. Angelique wanted Quentin to bring Maggie back to Collinwood so she could make them fall out of love with each other and reclaim her old place as his wife. To that end, she stuck a pin in the heart of a voodoo doll representing him. When that results in a possibly fatal cardiac event, she picks up the doll and cries that “You failed me!” She pulls the pin out. Cyrus’ prognosis that Quentin would die within minutes is thus defeated, but he is still gravely ill.
The camera settles on the clock in the foyer. It is 6:00. The shot lasts for five or ten seconds; they really want us to know it is 6:00. Barnabas has been in the house for several hours. He only exists when it is dark, since he is a vampire. When this episode premiered on 18 May 1970, the sun rose in central Maine at 4:29 AM and set at 8:00 PM. We may be able to believe that the date of broadcast doesn’t match the dramatic date, and accept that Barnabas can still be around at 6:00 AM. But it is not clear why they are asking us to do this.
We cut from the clock’s big closeup to another room, where Liz and Angelique are talking. Liz says that Cyrus was called away to attend another emergency. Angelique asks who is with Quentin. Liz says that Barnabas is. That left us wondering if the writers somehow forgot that Barnabas is a vampire. Why on earth would he agree to keep a vigil at an hour when the roosters are already crowing?
Maggie enters. She assumes Barnabas is the doctor. He tells her he is not. She apologizes; he dismisses it as a logical mistake. He hangs around when Liz and Angelique return and talk with Maggie. He accompanies Maggie when she goes in to the drawing room to see Quentin. He is still there when Quentin regains consciousness. He takes it upon himself to tell Quentin that Maggie is there. Quentin shouts that Maggie must not stay in the house. She does not go anywhere, but neither does Barnabas. He gives a shocked reaction, and is still lingering when the credits roll.
It is understandable that Barnabas would take a risk if it meant he could meet Maggie, and even more understandable that he would be reluctant to part from her once he had. He is not in fact related to anyone in this episode at all, not even as the extremely distant cousin he claims to be. In fact, he is from an alternate universe, which the show insists on calling “Parallel Time.” He knows another Maggie Evans there, one who looks and sounds just like this one but who is not married to Quentin. Barnabas had a long and fraught history with that Maggie. When he left his own continuity to come here in late March, he and the Maggie he knew had been moving towards a romance for several weeks. There was a bit of a bump in the road when Angelique’s counterpart cast a spell causing Maggie to fall in love with Quentin’s counterpart, but that was something that came and went. Barnabas never found out about it. So of course he wants to connect with this Maggie in some way.
*Presumably the city, though they never specify.
**Some in fandom protest that Cyrus is not a medical doctor. But he wrote a prescription for his fiancée, Sabrina Stuart, in #989, and in #1015 he resolved to give up his evil ways and “be a doctor again.” So I think these protests are ill-founded.
***Nowadays the idea of going to the airport in the middle of the night and buying a ticket for the next flight to central Maine seems to be of a piece with the most fantastic elements on Dark Shadows, but it wouldn’t have in 1970. Not that I can remember 1970- it was the year I was born, if you want to know- but well into my adult years it was still possible to show up at an airport gate with a handful of cash and buy a ticket for a plane that was already waiting there. I never did that myself, but I saw it done many times.