They Know

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They Know
Directed byBill Hader
Written byBill Hader
Story byBill Hader & Duffy Boudreau
Produced byPage Template:Plainlist/styles.css has no content.
  • Bill Hader
  • Robert Graf
  • Alyssa Donovan
StarringPage Template:Plainlist/styles.css has no content.
Template:Pluralize from textUnited States
Template:Pluralize from textEnglish

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They Know is an upcoming American horror film starring, written, and directed by Bill Hader. The film is based on an original story by Hader and Barry writer Duffy Boudreau.[1] This film mark's Hader's feature directorial debut.

Premise

A divorced father (Hader) grows suspicious that a mysterious man dating his ex-wife (Cardellini) is having a strange influence on their daughters (Lang and Mote).[1][2]

Cast

Background

The film is based on an original story that Hader had conceived with longtime collaborator Duffy Boudreau.[3] Hader initially wrote the script, which in an interview Ari Aster described as being "incredibly personal" to Hader,[4] after wrapping the final season of Barry. Hader struggled to find financing due to the "disturbing" and "cynical" nature of the script, and briefly shelved the project.[5] He revealed that he was inspired to return to the project after watching Aster's 2025 film Eddington.[5]

Production

File:Bill Hader, 2013 San Diego Comic Con-cropped-2.jpg
Hader had previously directed 18 episodes of the HBO crime tragicomedy series Barry, which he co-created and starred in.

The film is being financed by MRC.[1] Hader and Robert Graf will serve as producers under the formers "Hanarply" banner, with Alyssa Donovan serving as co-producer.[1]

Production began in Los Angeles on April 13, 2026, where it was announced that Linda Cardellini would be joining the cast as the protagonist's ex-wife.[6] On April 28, 2026, Lilou Lang and Lorelei Olivia Mote were announced to be joining the cast, playing the daughters of protagonist.[2]

References

  1. ^ a b c d Page Module:Citation/CS1/styles.css has no content.Grobar, Matt (2026-02-19). "Bill Hader To Make Feature Directorial Debut With MRC Horror Film 'They Know'". Deadline. Retrieved 2026-05-16.
  2. ^ a b Page Module:Citation/CS1/styles.css has no content.Grobar, Matt (2026-04-28). "Lilou Lang & Lorelei Olivia Mote Join They Know Opposite Bill Hader (EXCLUSIVE)". Deadline. Retrieved 2026-05-16.
  3. ^ Page Module:Citation/CS1/styles.css has no content.Solomon, Daniel (2023-04-17). "Bill Hader Wants To Direct A Movie After His Award-Winning Success On Barry". ScreenRant. Retrieved 2026-05-16.
  4. ^ Page Module:Citation/CS1/styles.css has no content.Bryant, Jacob (2025-07-10). "Bill Hader Is Sitting On a Film Script That's 'Incredibly Personal,' Unsentimental: 'That's Why It's Been So Hard to Get It Made' | Video". TheWrap. Retrieved 2026-05-16.
  5. ^ a b Page Module:Citation/CS1/styles.css has no content.Playlist, The; theplaylist (2025-07-18). "Bill Hader Wrote a Horror Movie— A Producer Called It "Horrible"". The Playlist. Retrieved 2026-05-16.
  6. ^ Page Module:Citation/CS1/styles.css has no content.Grobar, Matt (2026-04-13). "'They Know': Linda Cardellini Joins Bill Hader Horror Movie". Deadline. Retrieved 2026-05-16.