Black Widow
1987 · Thriller
Now streaming · 5 credits
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“There's no escaping insanity.”
About Dementium
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.
Dementium (2026) is a thriller/horror film running 1h 33m, directed by Mark Wilson Sunderland. It is available in HD on Cineby for 5 credits. Create an account, add credits and the unlock is yours permanently. Use the player controls for subtitles, quality and fullscreen.
Watch Dementium online
Once unlocked, the film starts in the player at the top of this page. If the first source is slow, the player rotates to a backup automatically. Your purchase is stored in your account, so Dementium opens straight into playback on any return visit. Progress is saved on this device.
Dementium FAQ
How much does it cost to watch Dementium?
Dementium costs 5 credits on Cineby. Credits are $1 each, and an unlock is permanent — once bought, the film stays in your account and can be rewatched without paying again.
Do I need an account to watch Dementium?
Yes. Create an account, add credits, then unlock the film. Signing up is free and only takes an email and password.
Can I watch Dementium again after unlocking it?
Yes. The purchase is attached to your account, so returning to this page later opens the player directly. You are only charged once.
Who directed Dementium?
Dementium was directed by Mark Wilson Sunderland.
Can I watch Dementium on my phone?
Yes. Cineby is responsive and the player works in mobile browsers. Tap fullscreen on the player for a larger picture, and use the CC control for subtitles.
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