WARNING: The following article contains spoilers for Riverdale Season One.

Riverdale's first season came to a close without an appearance by fan favorite Sabrina the Teenage Witch, but that doesn't mean viewers shouldn't keep an eye out for her.

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Showrunner Roberto Aguirre-Sacasa, who also writes Archie Comics' Chilling Adventures of Sabrina, teased the possibility the character might yet appear on Riverdale, and how she could factor into the supernatural elements lurking at the fringes of The CW drama.

"There's no secret that I love that character, and that that character is a huge part of the Archie universe," he told ComicBook.com. "The truth is, we did talk a lot about introducing Sabrina, but she's such an important character and it's such a big idea to introduce the supernatural into a natural world that honestly when we got to the finale -- it was before that, it was maybe a couple of months before that -- we kind of realized that there was so much stuff to play that if we introduced Sabrina, it would kind of overshadow everything that we had planned.

"The show kind of has hints of the supernatural throughout it; there are visions of Jason as a ghost, as a zombie," Aguirre-Sacasa continued. "Archie sees werewolves. There's a lot of talk about angry, pagan gods and there's a voodoo doll. We are going to continue exploring the idea of the supernatural being on the fringes of Riverdale, and that might be to lead up to Sabrina's arrival or that might just be to make it more like Twin Peaks and the way they dealt with the supernatural."

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This isn't the first time Aguirre-Sacasa has teased the possibility of Sabrian's arrival on Riverdale. In February, he wouldn't rule out her debut in the first season. "As I say, never say never," he said, "but it’s certainly within the realm of possibility." He noted at the time that, while trying to incorporate the supernatural would be tricky, the show could very well introduce her "in a way that's not supernatural."

Although the character ultimately didn't appear on the first season of Riverdale, there were several references to in the finale. One of the clearest examples was when FP Jones was shown in prison reading a copy of Chilling Adventures in Sorcery #1, for which Sabrina served as narrator.

Riverdale concluded its first season on Thursday, and has been renewed by The CW for a second season. Riverdale stars K.J. Apa as Archie Andrews, Lili Reinhart as Betty Cooper, Camila Mendes as Veronica Lodge, Cole Sprouse as Jughead Jones, Madelaine Petsch as Cheryl Blossom, Ashleigh Murray as Josie McCoy and Casey Cott as Kevin Keller.