Jessica Chastain will reprise her role as the adult Beverly Marsh in the second season of IT: Welcome to Derry. Chastain, who first portrayed the character in 2019’s IT Chapter Two, confirmed her return in an interview published on November 7, 2026, following the high-profile narrative shifts introduced during the Season 1 finale.
The return of the adult Beverly Marsh bridges the gap between the HBO prequel series and the modern film adaptations. While Welcome to Derry primarily serves as an origin story for the entity known as Pennywise, the Season 1 finale, “Winter Fire,” effectively dismantled the linear timeline of the franchise. The episode introduced a “temporal ouroboros” concept, a narrative device establishing that Pennywise perceives the past, present, and future simultaneously. This mechanic allows characters from the 1980s and 2010s to appear within a series otherwise focused on Derry’s earlier history.
The Impact of the Temporal Ouroboros
The groundwork for Chastain’s return was laid during the Season 1 finale when Sophia Lillis made a surprise cameo as the teenage Beverly Marsh. Set in 1988, the scene revealed a significant piece of family history previously omitted from the films: the death of Beverly’s mother, Elfrida Marsh, who died by suicide at Juniper Hill Asylum. By grounding the show’s supernatural elements in these specific memories, the series suggests that the Pennywise entity does not merely hallucinate forms to haunt its victims, but actively hijacks real, traumatic moments across time.
This structural change explains how Chastain’s adult Beverly can interact with a narrative moving into a different era. Following the departure of previous creative leads, Brad Caleb Kane is serving as the sole showrunner for Season 2, which is confirmed to center on a storyline set in 1935. The shift in leadership accompanies a deeper exploration of Pennywise’s earlier cycles, supported by the lore expanded in the “A Story of Derry” Halloween special released on October 31, 2026.
Connecting Welcome to Derry to the IT Films
The inclusion of the adult Losers’ Club members serves to recontextualize their trauma in the films. In IT Chapter Two, Beverly encounters a monstrous version of “Mrs. Kersh” in her childhood home. The “temporal ouroboros” twist suggests that these encounters are not isolated to the character’s present but are part of a larger, non-linear haunting that the prequel series is now mapping out.
While Season 2 will focus heavily on the 1930s, Chastain’s confirmed participation indicates that the series will maintain its multi-timeline structure rather than strictly adhering to a single historical period. This approach allows the production to maintain continuity with the Andy Muschietti-directed films while expanding on the systemic rot of Derry that existed long before the 1950s or 1980s settings of the original novels and movies.
Production for Season 2 is currently moving forward under Kane, focusing on how the entity’s 1935 awakening shaped the town’s future. Chastain’s return marks the first confirmed appearance of the adult Losers’ Club in the prequel’s second chapter, though the temporal mechanics established in Season 1 leave the door open for further connections to the 2010s timeline.