The film adaptation of Freida McFadden’s bestselling novel, released theatrically on December 19, 2025, has achieved remarkable success. It garnered an impressive $398 million during its initial theatrical run, demonstrating widespread audience appeal.

Record-Breaking Streaming Performance

Beyond its box office triumph, the psychological thriller premiered on STARZ on April 1, securing exclusive streaming rights. In less than two weeks, the 2025 film starring Sweeney shattered records, becoming STARZ's most-watched film debut.

This dual success across theaters and streaming highlights the film's ability to captivate viewers. The story follows Millie, portrayed by Sweeney, who takes a job as a housemaid and uncovers disturbing secrets of the affluent family she serves.

Star Power and Sequel Potential

The cast also features Amanda Seyfried and Brandon Sklenar, contributing to the film's draw. The continued strong performance on STARZ, following its theatrical debut, strongly indicates that a sequel is probable.

The momentum from this record-breaking thriller and its proven audience engagement makes a sequel a likely development. The studio is expected to capitalize on this success, potentially leading to adaptations of the entire book series.

Adapting the Book Series

With an existing STARZ audience invested in Millie's story, a second film would likely find a ready viewership. While adapting McFadden's third book is not yet confirmed, Hollywood stands to gain significantly from further installments.

Lionsgate, the studio behind the film, will carefully evaluate the initial performance to greenlight a sequel. The consistent success from theatrical release to streaming debut reassures the studio and investors of the franchise's viability.

Streaming Insights and Future Prospects

The film's streaming success offers valuable insights into audience behavior and the growing importance of on-demand platforms. Its rapid adoption and record viewership on STARZ underscore the power of streaming services in the entertainment landscape.

This performance, especially considering its theatrical release coincided with other major film debuts, highlights streaming's accessibility. The film's ability to retain audience interest across both platforms suggests strong franchise potential.

Further analysis of viewership demographics and patterns on STARZ will guide the studio's decisions regarding the series' future.