Eternally Yours Trailer Introduces CBS’ 500-Year Vampire Marriage — And Yes, a ‘Ghosts’ Crossover Could Happen

Forget happily ever after. What happens when "ever after" lasts 500 years and your spouse's adorable little habits stopped being adorable somewhere around century two?

CBS has released the official trailer for Eternally Yours, its new supernatural comedy from Ghosts showrunners Joe Port and Joe Wiseman. Starring Ed Weeks and Allegra Edwards as Charles and Liz, the series takes the romantic fantasy of spending eternity with the person you love and asks the considerably less romantic question: What if you eventually get sick of them?

The new comedy premieres Thursday, October 8 at 8:30 p.m. ET/PT on CBS, with episodes also streaming on Paramount+.

Five Hundred Years of Marriage Will Do It

The trailer takes us back to the beginning of Charles and Liz's romance, when Liz was still human and apparently found everything about Charles irresistible, even the way he cleared his throat. She lovingly tells him she wants to wake up to that sound until the end of time before Charles turns her into a vampire. Be careful what you wish for.

Five hundred years later, that same throat-clearing sound is enough to have Liz banging her head against the wall. Charles and Liz are still together, but the once-passionate couple has settled into an eternal marital rut. Making matters worse, vampire law apparently doesn't give them the luxury of simply calling a divorce attorney and dividing up five centuries' worth of belongings.

Their problems become even more complicated when their vampire daughter Emma, played by Helen J. Shen, starts dating Max, played by Never Have I Ever alum Jaren Lewison. There's just one little problem: Max is human, and Emma hasn't exactly told him that he's dating into a family of vampires. Meeting the parents was already stressful enough.

‘Eternally Yours’ Is Building Its Own Vampire Rules

Charles, Liz and Emma aren't the only unusual couple dealing with the complications of immortality. Parker Young stars as Jesse, another member of the family's coven, while Rose Abdoo plays his human wife, Phyllis. Unlike Max, who is eventually introduced to the family's supernatural secret, Phyllis doesn't know her own husband is a vampire.

Tristan Michael Brown and Shylo Molina round out the main cast as Mort and Henry.

The trailer also gives viewers a taste of how Eternally Yours plans to play with familiar vampire mythology. The family drinks blood, needs permission before entering someone else's home and has some very strong opinions about Twilight. Rather than dumping every rule on viewers immediately, Port and Wiseman plan to gradually expand the show's vampire mythology as the series progresses.

That approach should sound familiar to Ghosts fans. Part of the fun of that CBS comedy has been discovering new supernatural rules alongside Sam and Jay, and Eternally Yours appears ready to take a similar approach with its undead family.

This Vampire Comedy Actually Came Before ‘Ghosts’

Here's the interesting part: Eternally Yours isn't something Port and Wiseman came up with after turning Ghosts into a CBS hit.

They wrote the original script more than a decade ago. The project didn't move forward at the time, but it ended up playing an important role in their careers anyway. Their work on Eternally Yours helped lead to Port and Wiseman getting the opportunity to develop Ghosts, which is now heading into its sixth season.

After the success of Ghosts, CBS eventually returned to the vampire project that helped start the whole thing. The creators reworked and updated their original concept, and more than a decade after they first wrote it, Eternally Yours finally made its way to series.

There's even a funny bit of real life behind Charles' irritating habit. Port and Wiseman have worked together for more than 20 years, and Charles' constant throat clearing was inspired by something Wiseman does that has annoyed his longtime writing partner. Apparently 26 years together was enough inspiration for them to imagine how irritated two people might become after 500.

Could ‘Eternally Yours’ Cross Over With ‘Ghosts’?

Naturally, putting two supernatural comedies from the same creative team on CBS has already raised one very important question: Could the vampires of Eternally Yours ever meet the residents of Woodstone?

Port and Wiseman aren't ruling it out.

The creators have pointed out that the logistics are actually pretty simple. Most of the ghosts are confined to the Woodstone property, but vampires don't have that problem. Charles, Liz and the rest of the coven can travel, which means there's technically nothing stopping them from taking a vacation and checking into a certain haunted bed-and-breakfast.

Before anybody starts planning the crossover event, though, CBS has not announced one. Eternally Yours and Ghosts are currently separate series, and there's no confirmed episode bringing the two casts together. Still, the door has clearly been left open. If Sam ever checks in a group of unusually pale guests who insist on keeping the curtains closed, we'll know what's happening.

CBS Is Betting on Another Supernatural Comedy

Eternally Yours arrives at an interesting time for CBS. Ghosts has proven that a supernatural premise can work within the network's traditional comedy lineup without sacrificing the character relationships and heart that keep viewers invested beyond the weekly paranormal joke.

Port and Wiseman appear to be applying a similar philosophy here, only swapping ghosts trapped on an estate for vampires trapped with each other. Underneath the blood drinking and immortality, Eternally Yours is essentially a family comedy about marriage, parenting and what happens when the people you love also happen to be the people you can never escape.

And the trailer makes the central joke pretty clear: eternal love sounds wonderful until you actually have to live through the eternity part.

Eternally Yours premieres Thursday, October 8 at 8:30 p.m. ET/PT on CBS and streams on Paramount+.