BookTok has been a goldmine for Hollywood, churning out viral sensations that studios are eager to adapt. But few have sparked as much debate—and devotion—as H.D. Carlton's Cat and Mouse Duet. The series has a fiercely loyal fanbase, but it's also been at the center of heated discussions about whether its extreme content could ever be toned down for the screen. Now, we finally have an answer.

Carlton has officially confirmed that a movie adaptation of Haunting Adeline is in development. This marks the first concrete step toward bringing Adeline Reilly and Zade Meadows to life after years of fan-made trailers, casting rumors, and false reports claiming a Netflix adaptation was already in the works. Carlton's official website now teases that a movie is "loading," though no studio, filmmaker, cast, or release date has been announced yet.

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While the announcement specifically concerns Haunting Adeline, it's also the most significant update yet for Hunting Adeline. The two novels form one continuous story, making it hard to imagine the first movie reaching the end of Adeline and Zade's journey without eventually tackling its much darker sequel. And believe us, it is very dark.

Could 'Hunting Adeline' Become the Second Movie?

Haunting Adeline follows author Adeline Reilly as she moves into her late grandmother's gothic mansion, only to discover she's being watched by Zade Meadows—a vigilante who targets human traffickers while becoming dangerously obsessed with her. The sequel, Hunting Adeline, picks up after the first novel's cliffhanger and shifts into even more disturbing territory. Themes like abduction, trafficking, sexual violence, and trauma make a faithful mainstream adaptation particularly challenging. The books are explicitly for adult readers and contain material that would require substantial care—and likely significant changes—during adaptation.

No announcement has confirmed whether the production has acquired the rights to the complete duet or only the first novel. It's also unclear whether Haunting Adeline will be developed as a theatrical movie or for a streaming platform. The popularity of the second book, however, makes it a natural continuation should the first adaptation prove successful.

For fans of dark fantasy and horror, this adaptation joins a growing list of BookTok-inspired projects. If you're curious about other ambitious fantasy adaptations, check out The Most Ambitious Fantasy Movies Ever Made, Ranked: Epic Risks That Paid Off. And for those who prefer the source material, Timeless Magic: 7 Classic Fantasy Novels You Need to Read in 2026 offers a curated list of must-reads.

As the adaptation moves forward, all eyes will be on how Carlton and the production team handle the series' most controversial elements. Will they stay true to the books, or will they soften the edges for a broader audience? Only time—and a few more announcements—will tell.