Castle Rock exists in the fascinating space between adaptation and original creation. Set in the Stephen King multiverse, the Hulu anthology series doesn’t adapt any specific King novel but instead creates new stories populated by references, characters, and locations from across his vast body of work. It’s an ambitious concept that produces an uneven but intermittently compelling two seasons of horror television.
The first season centers on Henry Deaver, played by Andre Holland, a death-row attorney who returns to the fictional town of Castle Rock, Maine, when a mysterious young man, played by Bill Skarsgard, is discovered in a cage beneath Shawshank State Penitentiary. The second season reimagines the origin of Annie Wilkes from “Misery,” with Lizzy Caplan in the role Paul Sheldon once made famous.
Lizzy Caplan’s Annie Wilkes
The second season of Castle Rock is a significant improvement over the first, and Lizzy Caplan’s performance as a younger Annie Wilkes is the primary reason. Caplan doesn’t attempt to replicate Kathy Bates’s iconic film portrayal. Instead, she creates a version of Annie that’s tragic, terrifying, and deeply sympathetic in ways the original character rarely was. Her Annie is a woman with genuine mental illness navigating a world that has failed her at every turn, and Caplan makes you understand exactly how such a person could become the monster we know from “Misery.”
The second season’s integration of the “Salem’s Lot” mythology into Annie’s story is clever, creating natural intersections between King properties that feel organic rather than forced. The merging of Annie’s personal horror with the town’s supernatural horror gives the season a structural coherence that the first season lacks.
The show’s atmosphere is consistently its strongest element across both seasons. Castle Rock feels like a real place, specifically the kind of place where bad things have been happening for so long that the badness has seeped into the soil. The cinematography captures the bleak beauty of small-town New England with a precision that would make King himself proud, and the sound design creates unease in even the most mundane scenes.
The King references throughout both seasons are handled with restraint. Rather than overwhelming the narrative with Easter eggs, the show weaves its connections to the broader King universe into the fabric of its own stories, creating a sense of shared history without requiring encyclopedic knowledge of the source material.
The First Season’s Identity Crisis
The first season of Castle Rock never quite figures out what kind of story it’s telling. It establishes an intriguing mystery with Skarsgard’s unnamed prisoner, but the slow revelation of his identity and purpose meanders through too many subplots that dilute the central tension. Henry Deaver’s return to Castle Rock should be compelling, but Holland’s reserved performance, while technically skilled, doesn’t generate the emotional pull needed to anchor a mystery this ambiguous.
The pacing in the first season is genuinely problematic. Episodes that should build tension instead repeat it, circling the same questions without providing enough new information to justify the repetition. The finale, which attempts to reframe the entire season through a multiverse twist, divides viewers sharply. Some find it a bold narrative choice. Others find it a frustrating non-answer to questions the show spent ten episodes asking.
The show’s relationship with King’s mythology is a double-edged sword. For King devotees, the references and connections add a layer of pleasure that enhances the viewing experience. For casual viewers, the show sometimes feels like it’s trading on borrowed atmosphere rather than generating its own. The line between homage and dependence isn’t always clear.
The cancellation after two seasons means the anthology concept never got to demonstrate whether it could sustain itself long-term. The improvement from season one to season two suggests the creative team was learning, but we’ll never know what further seasons might have produced.
The King of Atmosphere
Castle Rock’s most valuable contribution to the King television universe is its proof of concept: you can create original stories in King’s world without adapting specific texts, and the setting itself generates enough horror to support new narratives. The show demonstrates that Castle Rock, as a place, is as much a King creation as any individual character, and that the town’s accumulated trauma is a story engine in its own right.
Should You Watch Castle Rock?
If you’re a Stephen King fan, the second season alone justifies the show’s existence. Caplan’s Annie Wilkes is a performance worth seeking out, and the season’s blend of psychological and supernatural horror hits the mark that the first season misses. You can watch the second season independently of the first, since the anthology format makes each season self-contained. Skip it if ambiguous storytelling and slow pacing frustrate you, or if the first season’s muddled finale would sour you on the entire enterprise.
The Verdict on Castle Rock
Castle Rock is a show of two halves. The first season has atmosphere and ambition but lacks the narrative discipline to make its mystery satisfying. The second season, anchored by Caplan’s extraordinary performance, demonstrates what the format can achieve when character and plot align with the setting’s inherent horror. It’s an unfinished experiment that proved its concept just as it was cancelled, leaving behind one genuinely great season and one that reminds you how close it came to being something more.