Diabolical poster

Diabolical

Movie 2025 7.0 /10
Directed by Tristan van Doorn

Jessica grew up watching her mother suffer from sudden, baffling psychological breakdowns that left the household tense and uncertain. Years later Jessica starts noticing the same eerie symptoms returning in her own life, strange episodes that don't line up with medical explanations. As she... Read more

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Streaming availability last verified: January 15, 2026

About Diabolical

Jessica grew up watching her mother suffer from sudden, baffling psychological breakdowns that left the household tense and uncertain. Years later Jessica starts noticing the same eerie symptoms returning in her own life, strange episodes that don't line up with medical explanations. As she tracks patterns in family history and the unsettling coincidences around her, she becomes convinced the source may be something malicious rather than purely mental. People close to her react with concern or skepticism, and she must weigh what to tell clinicians, friends, or family. The film follows Jessica as she pieces together clues, questions memory and trust, and weighs whether to accept clinical answers or confront a darker possibility. The mood stays intimate and quietly tense.

Diabolical was released in 2025, directed by Tristan van Doorn, and led by Caroline Lichtenberg, Elske Stout, Paul Schaareman, Alexandra van Lier and Sam Post. It premiered to genre audiences internationally and highlighted its cast's performances and drew genre attention.

The film had a limited theatrical run and appeared at genre festival screenings, with distribution focused on select markets. Wide box office totals weren't widely reported, so commercial impact remains modest and hard to quantify. Later it saw VOD release.

Among horror fans Diabolical sparked discussion about whether its scares come from inherited trauma or supernatural agency, with viewers praising its unsettling imagery and tight sound design. Social media and genre forums debated its ambiguous ending, and conversations touched on mental health representation. It inspired analysis on mental health portrayal.

Early audience scores sit at 7.0 out of 10 from a small number of votes, suggesting a mixed to positive response. Some viewers singled out Caroline Lichtenberg's central performance, highlighting themes of inheritance, the line between illness and evil, unreliable memory, and claustrophobic family dynamics. Viewers noted its oppressive pacing.

Details

Release Date
September 29, 2025
User Ratings
3 votes
Type
Movie
Genres
Horror, Mystery

Cast

C

Caroline Lichtenberg

Jessica Insinger

Elske Stout

Elske Stout

Anna

P

Paul Schaareman

David

A

Alexandra van Lier

Michelle

S

Sam Post

Valerie Insinger

D

Dirk van der Pol

Willem Insinger

J

Jos Timmerman

Dr. Raymond Erlings

Director: Tristan van Doorn

Frequently Asked Questions

Diabolical is not currently available on streaming subscription services, but you can rent or buy it on Amazon Video.

Yes, you can rent on Amazon Video or buy on Amazon Video.

With a rating of 7.0/10 from 3 viewers, Diabolical is well-regarded and recommended by viewers.

Jessica grew up watching her mother suffer from sudden, baffling psychological breakdowns that left the household tense and uncertain. Years later Jessica starts noticing the same eerie symptoms returning in her own life, strange episodes that don't line up with medical explanations. As she track...

Diabolical stars Caroline Lichtenberg, Elske Stout, Paul Schaareman, Alexandra van Lier, and Sam Post.

Diabolical was directed by Tristan van Doorn.

Diabolical was released on September 29, 2025.

Diabolical is a Horror and Mystery film.

Caroline Lichtenberg plays Jessica Insinger, the film's central character. Jessica grew up with a mother plagued by inexplicable psychological issues and later begins to experience the same disturbing symptoms herself.

Diabolical keeps the cause of Jessica's symptoms ambiguous, leaving it unclear whether they're psychological or the result of something evil. The film leans into that uncertainty, so the ending invites viewers to decide which explanation they find more convincing.

As a horror mystery about disturbing psychological symptoms that may have a supernatural origin, Diabolical is intended to unsettle and can be scary for viewers sensitive to psychological or supernatural horror. Expect tense atmospherics and moments designed to provoke unease rather than jump-scare-driven thrills.

Sam Post plays Valerie Insinger, who appears in the top cast alongside Jessica. The story centers on Jessica and her family's history of inexplicable psychological issues, so Valerie is part of the core family dynamic that the film explores.