They Know
As of October 11, 2026, They Know is a feature film that is in post-production. The production companies attached are Hanarply and MRC Television. Attached are director Bill Hader; writer Duffy Boudreau; and producers Bob Graf and Alyssa Donovan. It was scheduled to start shooting in Los Angeles, CA in April 2026. Production List last updated this listing on October 11, 2026.
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Project Summary
They Know is currently in production in Los Angeles, marking Bill Hader's feature directorial debut. Hader wrote the horror film with his Barry collaborator Duffy Boudreau and stars alongside Linda Cardellini, with young actors Lilou Lang and Lorelei Olivia Mote playing the daughters. MRC is financing the project, with Hader and Bob Graf producing under Hader's Hanarply banner and Alyssa Donovan co-producing. The film centers on a divorced father who begins to suspect his ex-wife's new boyfriend is exerting a disturbing influence on their children.
Production Contacts— Members Only
The production office contacts for They Know are on file at Production List, last updated October 11, 2026, and are available to members. Membership is $29.95 for the first month.
Cast & Crew
Directing
| Director | Bill Hader |
Writing
| Writer | Bill Hader |
| Writer | Duffy Boudreau |
Production
| Producer | Bill Hader |
| Producer | Bob Graf |
| Producer | Alyssa Donovan |
Contact details for each person listed are on file and available to members.
Member Discussion
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Working on They Know
They Know has finished principal photography. How productions hire crew · Working as an extra · Reaching the production office
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Source: Production List, published by the Film & Television Industry Alliance. Cite this page as https://www.productionlist.com/production/they-know (last updated Oct 11, 2026).