They Know

A divorced dad grows suspicious that his ex-wife is secretly dating a mysterious man who is having a strange influence on their children.

Genres
Horror, Mystery
Director
Bill Hader

Casting

Interesting facts

  • Filmed in: Los Angeles

They Know is an upcoming American psychological horror film written by, directed by, and starring Bill Hader. The film is based on an original story by Hader and Duffy Boudreau. This film marks Hader's feature directorial debut.

Production

The film was financed by MRC. Hader and Robert Graf serve as producers under Hader's Hanarply banner, with Alyssa Donovan serving as co-producer.

Production began in Los Angeles on April 13, 2026, where it was announced that Linda Cardellini would be joining the cast as the ex-wife of Hader's character. On April 28, 2026, Lilou Lang and Lorelei Olivia Mote were announced to be joining the cast, playing the daughters of Hader's character. On June 9, 2026, Cardellini revealed that principal photography on the film had concluded.

Read on Wikipedia · Text from Wikipedia, CC BY-SA 4.0. Data from Wikidata.

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