The Housemaid’s Secret has added Stephen Kalyn to its cast, and he is stepping into a very specific part of Millie Calloway’s new life. Kalyn will play Brock Cunningham, a lawyer who becomes the new love interest for Sydney Sweeney’s character in Lionsgate’s thriller sequel.
Lionsgate announced the casting in a short video shared Monday. Kalyn reads Freida McFadden’s novel outside a production trailer before the message welcomes him as Brock. The video confirms the character name and the movie’s December 17, 2027 theatrical date, while the reporting around the casting fills in the basic relationship: Brock is connected to Millie as she tries to build something that looks like a normal life.
Who does Stephen Kalyn play?
Kalyn plays Brock Cunningham, a lawyer who starts seeing Millie Calloway. The role places him in the part of Millie’s new boyfriend rather than bringing him back as someone from the first movie. Details about how much Brock knows about Millie’s past have not been revealed, and the casting announcement does not describe him as an ally or an enemy.
That distinction matters for a sequel built around a character who has spent years helping women escape abusive situations. Brock meets Millie while she is trying to move forward, but the film’s official premise already warns that her next housekeeping job will pull her toward another locked-room secret. Whether Brock becomes part of that danger is still a question for the movie.
What is The Housemaid’s Secret about?
The sequel adapts Freida McFadden’s second Housemaid novel and follows Millie after the events of the 2025 film. She takes a job keeping house for a woman she is never allowed to see. Behind the closed door, Millie finds a situation that threatens to expose secrets darker than the ones she has been carrying.
Sydney Sweeney returns as Millie, with Michele Morrone back as Enzo. Kirsten Dunst plays Wendy Garrick, Brittany Snow plays Marybeth, and Paul Anthony Kelly plays Douglas Garrick, the wealthy couple at the center of Millie’s new job. The sequel moves the story to a different household, so Brock is part of the fresh personal life Millie is trying to establish.
Why Stephen Kalyn is a name to watch
Kalyn is best known to the current audience of Prime Video’s Off Campus, where he plays Dean Di Laurentis. He also has credits in Gen V and other recent television projects. The Housemaid’s Secret gives him a much larger theatrical role opposite Sweeney, Dunst, Snow, Morrone, and Kelly.
The casting also connects two kinds of audience interest. Fans of Off Campus get a new reason to follow Kalyn, while readers who already know McFadden’s books can start looking for clues about Brock’s place in the sequel. The movie is not presenting him as a replacement for a returning character; he is one of the new people Millie meets when the story changes direction.
Who is returning behind the camera?
Paul Feig returns to direct The Housemaid’s Secret, and Rebecca Sonnenshine is back to write the screenplay. The sequel is based on McFadden’s novel and is produced by Feig, Laura Fischer, Todd Lieberman, and Sydney Sweeney, who also executive produces. Lionsgate announced the project after the first movie became a major box-office success.
The creative team is familiar, but the story is not simply repeating the first film. Millie’s new employer, the unseen woman behind the locked door, and Brock’s relationship with Millie give the sequel a new set of people to distrust. The studio has not released a full trailer or detailed scene footage yet.
When does The Housemaid’s Secret come out?
The Housemaid’s Secret is scheduled to open in theaters on December 17, 2027. Lionsgate has said production is planned for 2026, but it has not announced a final production schedule, runtime, rating, or streaming date. Those details will likely arrive with the first official teaser or a later production update.
Sweeney is also leading another major adaptation. Read our report on The Custom of the Country starting production for the cast and early details on that project.
For now, Kalyn’s casting gives The Housemaid’s Secret a new face and gives Millie a relationship the first film did not have. Brock may be a calm part of her attempted fresh start, or he may get pulled into the same secrets that keep following her. The sequel is keeping that answer behind its own locked door.
Do you think Brock will help Millie escape the Garrick house, or will he end up trapped in its secrets too?
