News they know Linda Cardellini Joins the Cast of Bill Hader’s Horror Movie, They Know The horror film, which Hader wrote and will direct, is his first major project since Barry By Vanessa Armstrong | Published on April 13, 2026 Credit: Chuck Zlotnick/Marvel Studios Comment 0 Share New Share Credit: Chuck Zlotnick/Marvel Studios They Know, Bill Hader’s next project, started filming in Los Angeles today, and with the start of production came news that Linda Cardellini will co-star in the horror film with him. According to Deadline, Cardellini will play the ex-wife of Hader’s divorced dad character. The premise of the movie involves Hader’s character growing increasingly “suspicious that his ex-wife is secretly dating a mysterious man who is having a strange influence on their children.” This isn’t Cardellini’s first time stepping into the horror genre. She’ll be playing Jason Vorhee’s mother, Pamela, in the upcoming Peacock series Crystal Lake. (And if you know anything about the role, then you know it will be a monstrous undertaking for her.) Cardellini’s other credits include playing Laura Barton (aka Clint’s much better half, pictured above) in the Marvel Cinematic Universe, Judy Hale in Dead to Me, and Carol Love-Smernitch in the currently running comedy, DTF St. Louis. We don’t know much more about the plot of They Know other than what we shared above. However, Hader wrote the script based on a story created by him and his Barry collaborator, Duffy Boudreau. Notably, They Know will mark Hader’s feature film directorial debut. No news yet on when the film will make its way to a theater (or streamer?) near you. [end-mark] The post Linda Cardellini Joins the Cast of Bill Hader’s Horror Movie, <i>They Know</i> appeared first on Reactor.