After his series Barry, the excellent Bill Hader discusses the influences behind his first horror film They Know

Bill Hader, known for Saturday Night Live and co-creating HBO’s Barry, has directed his first feature film, They Know, a horror film he also wrote and stars in. The film follows a divorced father suspecting his ex-wife’s new partner of exerting a troubling influence on their children, with Linda Cardellini in the cast. Hader developed the screenplay with collaborator Duffy Boudreau, drawing from conversations about remarried families. He initially struggled with the ending, finding it too conventional for horror cinema, until watching Kiyoshi Kurosawa’s Cloud provided new direction. Filming wrapped in May 2026, with the film currently in sound mixing. Hader discussed his filmmaking approach at IndieWire’s Future of Filmmaking 2026 summit, emphasizing the value of embracing doubt and learning from mistakes, lessons he applied from his SNL experience and directing episodes of Barry.

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