Thisby Thestoop Movie in Development at Warner Bros. Animation

Warner Bros. Pictures Animation is developing a feature film adaptation of Zac Gorman’s middle-grade fantasy series, Thisby Thestoop. Pitched by writers Steve Desmond and Michael Sherman, the project focuses on a young heroine managing a creature-filled dungeon, leveraging Gorman’s pedigree as a storyteller and the writers’ Black List history.

The move to adapt Thisby Thestoop is more than a simple acquisition of a charming book series; it is a calculated play for intellectual property that bridges the gap between “middle-grade” whimsy and high-concept world-building. In an era where studios are desperate for the next “evergreen” franchise, the challenge lies in translating the intimacy of a novel into a cinematic experience that scales. The risk is inherent: too much polish and you lose the heart; too little, and you fail to capture the global SVOD and theatrical audiences. This transition from page to pixel is rarely a clean break; it requires a surgical approach to rights acquisitions and contract negotiations, typically handled by high-stakes intellectual property lawyers who ensure the author’s vision isn’t swallowed by studio mandates.

The Pedigree of a Visual Storyteller

Zac Gorman is not a typical novelist. His background as a storyboard artist on the Emmy-winning Over the Garden Wall for Cartoon Network gives him a distinct advantage in the adaptation process. That series is now regarded as a modern classic, characterized by its atmospheric depth and hauntingly lovely aesthetics—traits that likely informed the “dynamic, imaginative pitch” that dazzled Warner Bros. Pictures Animation. Gorman’s versatility is further evidenced by his Annie Award nomination for character design on Nickelodeon’s Welcome to the Wayne and his writing contributions to the Rick and Morty comic series via Oni Press.

The source material itself carries significant critical weight. Thisby Thestoop and the Black Mountain was a 2018 Cybils Awards Finalist in the Elementary/Middle Grade Speculative Fiction category. The judges’ assessment of the work provides a roadmap for the film’s tonal direction, describing the series as:

“Witty, funny and full of feeling, with memorable characters.”

This emotional core, paired with a setting involving a massive, creature-filled dungeon, creates a brand equity that is highly marketable. When a creator possesses both the literary IP and the technical storyboard experience, the friction between the writer’s room and the animation studio is significantly reduced, creating a streamlined production pipeline.

The Black List Influence: Desmond and Sherman

The selection of Steve Desmond and Michael Sherman as the architects of the script is a signal that Warner Bros. Is prioritizing sophisticated storytelling over generic children’s fare. The duo is no stranger to the grueling process of high-level adaptation. They previously tackled Paul Tremblay’s novel The Cabin at the End of the World, which was later reworked by M. Night Shyamalan for the Universal release Knock at the Cabin. Their ability to navigate the tension between source material and studio demands is a proven commodity.

Their presence on the Black List—the industry’s most prestigious annual survey of the most liked unproduced screenplays—further cements their status. Projects like The Saturday Night Ghost Club and Orb (a story about a mysterious ball mimicking a dead child) demonstrate a penchant for the surreal and the poignant. Even their project Harry’s All-Night Hamburgers, based on a Lawrence Watt-Evans short story, found its way to Warner Bros. After a Black List stint, proving that the studio trusts their ability to handle intergalactic and time-traveling narratives.

With CAA and Ziffren in the mix, the negotiation for backend participation and creative control becomes a masterclass in leverage, a domain where elite talent management agencies orchestrate the fine print to ensure the writers are protected throughout the development hell that often plagues animated features.

Analyzing the Warner Bros. Animation Pipeline

Thisby Thestoop enters a crowded and ambitious production slate. Warner Bros. Is currently balancing a diverse portfolio of animated IP, ranging from classic literary adaptations to original collaborations. The current trajectory of their release calendar suggests a strategic spread of demographics:

• The Cat in the Hat: Slated for a theatrical opening this November, targeting the broad family market.
• Bad Fairies: A Locksmith collaboration arriving in May 2027.
• Margie Claus: A holiday 2027 release featuring animation legend Kirk DeMicco and Melissa McCarthy.
• Oh, the Places You’ll Proceed!: A high-profile project from Jon M. Chu and Jill Culton, expected in 2028.

By slotting Thisby Thestoop into this mix, the studio is diversifying its risk. While The Cat in the Hat and Oh, the Places You’ll Go! rely on established, legacy brand recognition, Thisby offers the opportunity to cultivate a new, dedicated fanbase within the speculative fiction community. However, as Warner Bros. Prepares for this gauntlet of releases, the pressure on entertainment marketing firms to carve out a distinct identity for a niche title like Thisby Thestoop will be immense.

The project’s success will ultimately hinge on whether the “heartfelt character storytelling” praised by the Washington Library Association Sasquatch Book Award nominees can survive the machinery of a major studio. If Desmond and Sherman can maintain the wit of the original text while expanding the scale of the dungeon’s creature-filled world, Warner Bros. May have found its next sleeper hit.

In the high-stakes game of IP acquisition, the winners are those who can blend artistic integrity with commercial scalability. As Thisby Thestoop moves from development toward production, it serves as a reminder that the most valuable assets in Hollywood are often found in the margins of middle-grade literature and the portfolios of storyboard artists. For those navigating the complexities of these deals—from copyright disputes to talent procurement—the right professional network is the only real insurance policy. The World Today News Directory remains the definitive resource for connecting studios and creators with the vetted legal and PR experts required to bring these imaginative worlds to life.

Disclaimer: The views and cultural analyses presented in this article are for informational and entertainment purposes only. Information regarding legal disputes or financial data is based on available public records.