Showtime is bringing the original tale of Swedish vampires to life again with Let the Right One In.

Showtime is venturing into the world of vampires with Let the Right One In. Based on the original Swedish film, which was based on a book, the new series will explore the relationship between a father and his vampire daughter, who is forever stuck at age twelve.

According to Deadline, the network picked up the series in September 2021, with Andrew Hinderaker as the showrunner. He previously wrote episodes of Penny Dreadful, Pure Genius, and Away. Hinderaker is an executive producer alongside Marty Adelstein (Last Man Standing, Teen Wolf), Becky Clements (Cowboy Bebop), Seith Mann (Raising Dion), with Alissa Bachner (Snowpiercer) and Ben Rosenblatt (10 Cloverfield Lane, Prey) as co-executive producers, Demián Bichir (Grand Hotel) as a producer, and Paul Leonardo Jr. (Severance) as a co-producer.

You never know who or what could be lurking in the shadows, so watch your back as we share every detail about Let the Right One In.

With a series, there is more room to dive into the original book's story and the two films presented. Mark (Demián Bichir) and his daughter Eleanor (Madison Taylor Baez) lead different lives than most. After being turned into a vampire ten years before, forever frozen as a child, the two had to adapt. Eleanor can only come out at night and has to have human blood to survive. Her father makes sure she's adequately supplied. The showrunner has said he wanted to expand on the relationship between the vampire and their caretaker in the series since there was never room for it to be a larger presence in the films.

Related: Let the Right One In: How the Showtime Series Will Compare to Films

Twice in the teaser trailer, a voiceover says, "Find the host. Find the cure." It looks like the series will explore the chance that Eleanor's vampirism could be reversed if they find the right person, either to make or provide the cure. This isn't a plot line that was present in the films, so that will be an interesting addition to the show.

The teaser seems to show people that are not Eleanor drinking blood, meaning it's likely some other vampires will make appearances throughout the series. They could be older vampires, potentially providing answers about the cure the voiceover speaks of, or individuals Eleanor accidentally turns when feeding. Variety confirmed that there is at least one other vampire, Peter (Jacob Buster), in the series with a casting announcement. This vampire does try to become human again, but there are disastrous consequences.

Variety also detailed that Zeke (Kevin Carroll), a friend of Mark's, is aware of Eleanor's condition. As a restaurant owner, is he helping his friend get the sustenance his daughter needs? With this information, it looks like the show isn't only exploring the relationship between Eleanor and Mark, but the relationship with others in their life who know about vampires.

Like the two films, Eleanor will become friends with a lonely child her age. The teaser doesn't give enough information to know if their relationship will follow like those before it, but there's a chance that the two end up on a train with Eleanor in a trunk.

​​​​​​​Demián Bichir is Mark, the father of a vampire daughter. The actor is known for his work in Godzilla vs. Kong, The Nun, Weeds, and The Hateful Eight. Madison Taylor Baez portrays Eleanor, the young girl who has spent the last decade as a vampire. She is best known for her role as young Selena in Netflix's Selena: The Series.

Related: These International Films Inspired American Remakes

Additional cast members include Anika Noni Rose (The Princess and the Frog, Everything, Everything, Maid) as Naomi Cole, Grace Gummer​​​​​​​ (American Horror Story, Dr. Death) as Claire, Kevin Carroll (The Walking Dead, Snowfall)​​​​​​​ as Zeke Dawes, Josh Wingate (Insidious: The Last Key, General Hospital)​​​​​​​ as Roland, Ian Foreman​​​​​​​ (Ordinary Joe) as Isaiah, Caroline Neff (Chicago P.D.) as Danielle Wilson, Jimmie Saito (The Blacklist) as Ben Jones, Fernanda Andrade​​​​​​​ (Moon Knight, The Devil Inside) as Elizabeth, Michael Patrick Thornton (Private Practice, The Exorcist) as Father Sean, Don Darryl Rivera as Errol Valdez, and Jacob Buster (Colony) as Peter.

The premiere will be available to stream starting October 7, 2022.

This series has been trying to hit screens for several years. It was initially developed for A&E in 2015, Deadline reports, before moving to TNT just a year later. While the new network ordered a pilot and even cast it, it was never made, and the show became dead in the water. It was shopped around again, landing at Showtime with the current iteration. TNT's version was going to be much closer to the source material of the book, which does include a number of concerning scenes between the vampire and their caretaker. However, many of these scenes did not make it into the film adaptations.

It isn't clear if other aspects of the book, like that Eleanor's character, originally named Eli, became a eunuch after he was turned into a vampire. This is hinted at in the Swedish film adaptation, with Eli telling their new friend that, despite looking like a girl, "I'm not a girl," but may not carry over into the show.

While you wait, check out another vampire show hitting Peacock the month before.

Liz is an entertainment writer, horror fanatic, and undying romantic. After completing her degrees in Anthropology, she decided to embrace her love for writing and embark on a new path. Liz has previously covered New York Comic Con and the London Independent Film Festival.