The first expert in forbidden lore to join the cast of characters on Dark Shadows was Dr Peter Guthrie of Dartmouth College, parapsychologist. Guthrie was chief scientific advisor to well-meaning governess Victoria Winters as she assembled the forces of good and led them in battle against undead blonde fire witch Laura Murdoch Collins. In #184, Guthrie confronted Laura. He told her that he had figured out she was “The Undead,” the first appearance of that expression on Dark Shadows. He also offered to help her if she would desist from her plan to murder her young son David. Guthrie was nervous about making this offer, apparently fearing Laura might draw him into her web of evil. He needn’t have worried about that- she responded, not by corrupting Guthrie, but by killing him.
The second such expert was a straightforward mad scientist. She was Julia Hoffman, MD, who in #291 offered to cure vampire Barnabas Collins of his curse. Though Julia made it a condition of her offer that Barnabas stop preying on the living, as Guthrie had conditioned his offer to Laura on her allowing David to live, we could already see that Julia was far more deeply compromised than Guthrie had been. She had learned of Barnabas’ existence while treating his victim, Maggie Evans, and she could gain the time to make her experiment work only by betraying Maggie’s trust and preventing her from regaining her memory of what Barnabas was and what he had done to her. Before long, Julia acquiesced to Barnabas’ pressure and joined him in murdering her old medical school classmate, Dr Dave Woodard. Eventually, she and Barnabas would become the parents of a Frankenstein’s monster named Adam. The shocking abuse they heaped on Adam in his infancy left no doubt that as a mad scientist, Julia is as much a symbol of extreme selfishness as is a vampire.
Adam was the product of an experiment designed by another mad scientist, Dr Eric Lang. Lang was even more flagrantly evil than Julia. When he needed a head for the monster, he tied his assistant down and set about cutting his head off. Granted, the assistant was a character played by Roger Davis, so the audience could see where Lang was coming from. In fact, the writers themselves eventually got so fed up with Mr Davis they cut the head off the final character he introduced. Still, Lang’s impatient response to the assistant’s complaints showed that he was utterly lacking in human compassion.
Now, we are in a different universe than the one where Dark Shadows spent its first 196 weeks. The resident mad scientist in this “Parallel Time” is Dr Cyrus Longworth. Cyrus has developed a potion that turns him into a real jerk. That may not sound like much of an achievement compared to building a Frankenstein’s monster or curing vampirism or whatever it was Guthrie wanted to do for Laura. But that’s to be expected. By the time Guthrie came to the great estate of Collinwood early in 1967, monsters and black magic and the like had been fixtures there for over 171 years. It appears that such things are relatively new to this version of Collinwood, so Cyrus is doing the sort of modest project that tends to characterize a field when it is first starting.
When Cyrus drinks his potion, his red hair turns black, he grows a lot more of it, and a putty appliance materializes, dangling precariously from the bridge of his nose. In this form, he calls himself “John Yaeger.”

As Yaeger, he goes to the Eagle, a tavern in the village of Collinsport, where barmaid Buffie Harrington is fending off the advances of her boyfriend Steve. Steve keeps coming up behind Buffie and grabbing her by the waist, a move that doesn’t leave a lot to the imagination. Buffie seems to be at once excited by Steve’s aggressiveness and irritated that he is keeping her from getting her work done. When Yaeger shows up and orders Steve to vacate the premises, Buffie’s evening goes from complicated to disastrous. The men fight, Steve loses, and Yaeger bodily ejects him from the tavern. Buffie confronts Yaeger about the wreck he has made of the place.
Later, Yaeger returns with a check to cover the damages. Buffie sees that the check is signed “Cyrus Longworth.” She explains that she used to work for the Collins family, and she knows who Cyrus is. She doesn’t believe that Cyrus would be friendly with Yaeger, and is sure he wouldn’t give him a check to cover the expenses he had incurred in a bar fight. Yaeger tells her the check is legitimate, and insists she keep quiet about his connection to Cyrus. He leaves.
Later, Quentin Collins finds the battered Steve and brings him into the tavern. Steve refuses to call the police, vowing to find Yaeger and settle the score himself. He leaves, and Quentin asks Buffie what she knows about the man who beat Steve. She says she doesn’t know much about him, but that a friend of Quentin’s does. She shows him the check with Cyrus’ signature. Perplexed, Quentin leaves.
Suddenly, Yaeger appears from nowhere. He tells Buffie that she promised not to tell of his connection to Cyrus. He starts choking her.
This is Elizabeth Eis’ first appearance as Buffie. Eis was on Dark Shadows once when it was set in the main continuity, playing Nelle Gunston, a devotee of a sinister cult who met Barnabas in the Blue Whale, a bar that corresponds to the Eagle in that universe. Barnabas killed Nelle before her only episode was over. It’s good to have Eis back, she was fun as Nelle and is a commanding presence today.
George Strus plays Steve, in his first and only role on the show. Strus was primarily a stunt performer, but he had lines in a few productions, most notably as a tough in Shaft. His last imdb credit was as a stunt performer in Spike Lee’s Malcolm X, made in 1991, twenty years after Shaft. Steve is supposed to be a big dumb galoot, and Strus pulls that off satisfactorily.
Christopher Pennock’s name appears in the closing credits for the role of Cyrus. He is credited as “Chris Pennock” for Yaeger, adorably enough.