Bill Hader Making His Directorial Debut with the Horror Film ‘They Know’

April 29, 2026

Written by Kelli Marchman McNeely

Kelli Marchman McNeely is the owner of HorrorFuel.com. She is an Executive Producer of "13 Slays Till Christmas" which is out on Digital and DVD and now streaming on Tubi. She has several other films in the works. Kelli is an animal lover and a true horror addict since the age of 9 when she saw Friday the 13th. Email: [email protected]

The casting department for the horror film They Know just got bigger. Rising stars Lilou Lang and Lorelei Olivia Mote have officially joined the project. Deadline reports these talented youngsters will play the children at the center of the chaos.

A Family Dynamic from Hell

The story follows a divorced father, played by the versatile Bill Hader. He begins to suspect his ex-wife is hiding a dark secret. Linda Cardellini stars as the mother with a mysterious new boyfriend. This stranger seems to exert a bizarre, unsettling influence over their kids. It is a domestic nightmare where trust is the first casualty.

The Creative Powerhouse

This film marks Hader’s highly anticipated debut as a feature film director. He co-wrote the script with his trusted Barry collaborator, Duffy Boudreau. The studio MRC is providing the financial muscle for this creepy venture. Hader also produces the film under his own Hanarply banner. He is joined by veteran producer Robert Graf, known for Nope.

Who is Bill Hader? He starred in the series “Barry.” He was on SNL from 2005 to 2013 and played Richie in IT: Chapter Two, so he’s not new to horror. He has also lent his voice to multiple animated features and series, including “Bob’s Burgers.”

Production Underway

Cameras are currently rolling on the streets of Los Angeles. Fans should keep an eye out for more eerie details soon. This project promises to blend domestic drama with genuine, skin-crawling horror. Pro-Tip: If your ex-wife’s new beau talks to ghosts, just run.

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