Daniel Stamm’s ‘Lockbox’ Drops a Dread-Inducing New Trailer

June 10, 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]

If you thought Evil Dead alum Lou Taylor Pucci learned his lesson about opening sketchy, ancient books back in 2013, Dark Castle Entertainment is here to prove that some people never learn.

Pucci is officially back in the literary danger zone in the first trailer for Lockbox, the latest supernatural thriller from The Last Exorcism director Daniel Stamm.

From Your Headphones to the Big Screen

The film serves as a highly anticipated big-screen adaptation of a fan-favorite episode from the hit anthology podcast Knifepoint Horror. Created by Soren Narnia, the story was adapted for film by Emmy-winning playwright Justin Yoffe.

For those unfamiliar with the source material, Knifepoint Horror has racked up over 10 million downloads since 2010. And it operates under the SpectreVision Radio banner—the audio network founded by Elijah Wood, Daniel Noah, and Josh C. Waller.

The cinematic adaptation has assembled an absolute Mount Rushmore of modern scream queens to anchor the dread. Carla Gugino, the undisputed MVP of Mike Flanagan ‘sverse (The Haunting of Hill House, Gerald’s Fall of the House of Usher), stars. She’s Katharine Isabelle, the legendary genre icon behind Ginger Snaps and Backrooms.

The Sinister Neighbor Next Door

The narrative of Lockbox ditches loud, cheap jump scares in favor of a suffocating, atmospheric slow-burn:

Seeking a quiet place, Ellen (Gugino) retreats to an isolated rural town, bringing along her severely traumatized cousin, Winthrop. Their fragile attempt at domestic peace shatters when a neighbor knocks on the door with a bizarre, frantic warning: Winthrop is dangerous. As bizarre, reality-bending phenomena escalate around the property. Ellen is forced to put everything on the line to defend the boy from an aggressive, otherworldly entity that has tracked him to the woods.

Producer Kearie Peak (Winthrop), who produced the feature alongside Capstone Studios, couldn’t contain excitement about Gugino’s performance:

Lockbox captures the eerie dread that makes ‘Knifepoint Horror’ such a success. Carla Gugino is a perfect fit for the film, bringing a rare intensity and subtlety that aligns perfectly with the silent horror of Lockbox. Beneath the supernatural tension, the film explores how generational trauma festers and twists over time.”

Coming Soon

Are you tired of predictable horror movies? Want something with actual emotional weight and a lingering sense of doom? Lockbox looks like your definitive summer salvation.

Now, check out the eerie new trailer and official poster. And be prepared to keep your valuables under lock and key when the film hits theaters on July 3.

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