'Off Campus' star Stephen Kalyn joins the very hot cast of Sydney Sweeney's 'The Housemaid’s Secret'

Plus Kirsten Dunst, Paul Anthony Kelly, and Brittany Snow, and a whole new group of people Millie probably shouldn’t trust.

01 September, 2026
'Off Campus' star Stephen Kalyn joins the very hot cast of Sydney Sweeney's 'The Housemaid’s Secret'

Just when we thought The Housemaid’s Secret couldn’t get any more intriguing, it’s gone and added another very familiar face to the mix. Off Campus breakout star Stephen Kalyn has officially joined the cast of the upcoming thriller, and yes, he’s playing Millie Calloway’s new love interest. Kalyn will take on the role of Brock Cunningham, a lawyer who gets romantically involved with Sydney Sweeney’s Millie. And considering Millie’s history with complicated people, we’re guessing this relationship is going to come with its own set of problems.

Kalyn joins a cast that is already looking very stacked, with Kirsten Dunst, Brittany Snow and Paul Anthony Kelly joining returning stars Sweeney and Michele Morrone. 

Meet Millie’s new circle


Dunst is arguably the most intriguing new addition. She plays Wendy Garrick, the mysterious woman at the centre of Millie’s latest housekeeping job. Her husband, Douglas Garrick, is played by Paul Anthony Kelly, a wealthy CEO who hires Millie to work in their home. Brittany Snow, meanwhile, plays Marybeth, a receptionist at Douglas’s company. And then there’s Kalyn as Brock, Millie’s lawyer boyfriend, which, honestly, is already enough to make us suspicious. Millie has somehow found herself surrounded by an entirely new group of people, and if the first movie taught us anything, we already know better than to trust any of them.

If you need a quick Housemaid refresher, the first film introduced us to Millie as she took a live-in housekeeping job with the seemingly perfect Winchester family. Nina Winchester, played by Amanda Seyfried, and her husband Andrew, played by Brandon Sklenar, seemed to have a picture-perfect life, until some seriously disturbing secrets began to unravel.

The twist? Millie wasn’t exactly an open book herself. She had secrets of her own and a complicated past that made her much more capable of handling the situation than anyone expected.

Millie’s new nightmare

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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The sequel, based on Freida McFadden’s second Housemaid novel, picks up with Millie taking what she thinks is another straightforward housekeeping job with the Garrick family. And, because apparently Millie is incapable of getting a normal employer, there’s a very specific albeit strange rule attached to the job: she is never allowed to see Douglas’s wife, Wendy. She can hear Wendy crying behind a locked bedroom door, but she’s forbidden from going inside. Naturally, Millie starts to suspect that something is very, very wrong. And naturally, she decides to investigate. From there, things get considerably darker.

Sweeney is back as Millie, while Michele Morrone returns as Enzo Accardi, her ally and love interest from the first film. With Dunst, Kelly, Snow, and Kalyn now in the mix, Millie has a whole new set of relationships to navigate, and if you’ve read McFadden’s books, you already know that nobody is quite as innocent as they seem. 

Paul Feig is returning to direct, with Rebecca Sonnenshine back as screenwriter. The film is currently scheduled to hit theatres on December 17, 2027, which feels very far away considering we’re already this invested. And while we’ll have to wait a little longer to see how Brock fits into Millie’s increasingly chaotic life, Kalyn’s casting has definitely caught our attention. After breaking out as Dean Di Laurentis in Off Campus, he’s now going from college romance to psychological thriller opposite Sweeney. We have questions. Mostly about Brock. And whether Millie should trust him. Safe to say, we’ll be watching very closely.

Lead image: IMDb and Getty Images

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