“There's no escaping insanity.”
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Dementium (2026) – Official Trailer, Cast & Details
Dementium at a Glance
Dementium is a 2026 thriller and horror film helmed by Mark Wilson Sunderland, starring Michael Aaron Milligan, Karynn Moore and Doug Dawson. It has a runtime of 1 hour 33 minutes and came out on August 10, 2026. Dementium is rated NR in the United States.
Watch the official Dementium trailer for free in 123Movies below.
1080p HD • Free YouTube Stream
Storyline & Synopsis
Wyatt Bailey retreats to a secluded cabin to solve his mother’s murder. After taking DMT to confront his dead father, he’s torn between visions of his ex-girlfriend offering hope and a witch urging destruction in a battle for his soul.
Where “Dementium” Fits in the 123Movies Catalog
Michael Aaron Milligan
Wyatt Bailey
Karynn Moore
Cora Roberts
Doug Dawson
Scientist/Witch (as Dougie Dawson)
Kristen DeVore Rakes
Ashlyn Bedford
Adam Boyer
Jeffery Bailey
Dani Deetté
Violet
Andrew Hunter
Officer Wainwright
Alexa Rachelle Jennings
Officer Bishop
J.J. Madaris
Detective Cratchett
Muretta Moss
Willow Bailey
Luke Speakman
Young Wyatt
Frequently Asked Questions About Dementium
When was Dementium released?
Dementium was released on August 10, 2026.
What is the runtime of Dementium?
Dementium has a runtime of 1 hour 33 minutes (93 minutes).
Who stars in Dementium?
Dementium stars Michael Aaron Milligan as Wyatt Bailey, Karynn Moore as Cora Roberts, Doug Dawson as Scientist/Witch (as Dougie Dawson) and Kristen DeVore Rakes as Ashlyn Bedford. The cast also includes Adam Boyer, Dani Deetté, Andrew Hunter and Alexa Rachelle Jennings.
Who directed Dementium?
Dementium was directed by Mark Wilson Sunderland. The screenplay is credited to Kyle Sunderland, Mark Wilson Sunderland and Clayton Thompson.
What genre is Dementium?
Dementium is listed on TMDB as a mix of thriller and horror.
What is Dementium rated?
Dementium is rated NR in the United States.
Where can I watch the trailer for Dementium for free?
You can watch the official trailer for Dementium for free on this 123Movies page. It is embedded from YouTube.
What movies are similar to Dementium?
Movies TMDB recommends alongside Dementium include The Apology (2022), Race with the Devil (1975), Pose (2026), Black Widow (1987) and What's the Matter with Helen? (1971).
Can I stream the full movie of Dementium on 123Movies?
No. 123Movies only shows official trailers and title information. Full movies are not hosted or linked on this site.
The Apology
Race with the Devil
Pose
Black Widow
What's the Matter with Helen?
Maniac
The Invitation
Unseen
The Mean Season
No Name on the Bullet
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