Bill Hader is diving into his first project since the series finale of Barry (pictured above), a dark dramedy that he co-created and starred in as a hitman trying to make it as an actor.
According to Deadline, Hader has partnered with MRC (the company behind Emerald Fennell’s Wuthering Heights) to make They Know, a horror movie penned by Hader and his Barry collaborator Duffy Boudreau that will also see Hader direct.
Plot details are sparse for the film, though we do know it “centers on a divorced dad (Hader) who grows suspicious that his ex-wife is secretly dating a mysterious man who is having a strange influence on their children.”
This may be a film that Hader has talked about before. Back in July 2025, Hader was on the A24 podcast with director Ari Aster, where he shared that he’d written a horror movie right after Barry wrapped. The initial reaction to his script, however, wasn’t what he was hoping for.
“I had a meeting with a big producer—actually, a very smart, lovely guy,” Hader said (via The Playlist). “But his response to it was so bad.” The producer called it “mean-spirited,” “horrible,” “disturbing,” and “cynical.”
“I was like, yeah, it’s a horror movie,” Hader recalled. “Did you not see my TV show?”
In this podcast, however, Hader also said that seeing Aster’s Eddington gave him the motivation to take the script out again. Whether that script was They Know isn’t confirmed, but it seems likely.
Production on They Know will start in Los Angeles this spring.
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