Insidious Possession (2026): Cast, Story and Release Details

Prepared by Movies Dock Editorial

Insidious Possession follows a former top student whose sudden behavior troubles her family and school. When her parents seek help from a priest, they discover a demonic force is involved. The inexperienced cleric must confront the possession while the safety of the wider town hangs in the balance.

Insidious Possession is an upcoming horror film directed by Marcel Walz and written by Joshua Pruett. The story centers on a girl whose abrupt change in behavior leads her parents to seek religious help.

The film is currently in production and is scheduled for release on August 14, 2026. Robert Alkire II, Dominic Keating, Llana Barron and Bryan Barron are attached to the cast.

Insidious Possession movie details

Story without spoilers

The film follows a former A-student who begins acting out both at school and at home. Concerned by the change, her parents turn to a priest for assistance. Their fears deepen when they realize that the girl may be possessed by the devil.

The priest is inexperienced, but he must attempt to save the girl’s soul. The situation also carries a larger threat, as the possession places the souls of the entire town in danger.

What to expect

Insidious Possession is categorized as horror and uses a demonic-possession premise focused on a troubled student, her worried parents and a priest confronting a supernatural threat. Its setup suggests a story built around religious intervention and escalating danger beyond one family.

The film is also associated with the mockbuster keyword in its supplied metadata. Further details about its tone, specific scares, ending and visual approach have not been provided.

Cast and creative team

Marcel Walz directs Insidious Possession from a screenplay by Joshua Pruett. Robert Alkire II is listed as Deacon Williams. Dominic Keating, Llana Barron and Bryan Barron are also part of the cast, though character details are not supplied for them.

• Robert Alkire II as Deacon Williams
• Dominic Keating
• Llana Barron
• Bryan Barron

Release and production context

Insidious Possession is a United States production from The Asylum. It is currently in production and has a listed release date of August 14, 2026. The film is classified as horror. No runtime or spoken-language information has been supplied.

Production companies: The Asylum

Insidious Possession official trailer

Watch the official trailer on YouTube

Movies Dock view

With its possession-centered premise and an inexperienced priest at the heart of the conflict, Insidious Possession is positioned as a supernatural horror title with consequences extending from one household to an entire town. More production details may clarify the film’s full cast and presentation as its release approaches.

Film data:
TMDB · IMDb