The Intruder Within
“Terror and death strike as monster preys upon trapped victims!”
We checked 8 streaming services in India on 07 Jun 2026 at 04:18 IST
About
When drillers on an offshore oil rig dredge up several prehistoric eggs, one man is attacked by what appears to be an unidentified deep-sea creature protecting them. Soon, strange symptoms and behaviors become apparent among the crew and one of the creatures grows to adult-size.
Cast
Chad Everett
as Jake Nevins
Joseph Bottoms
as Scott
Jennifer Warren
as Colette Beaudroux
Rockne Tarkington
as Mark
Lynda Mason Green
as Robyn
Paul Larsson
as Sam
James Hayden
as Harry Colman
Michael Hogan
as Chili
Mary Ann McDonald
as Wilma
Matt Craven
as Phil
Ed LaPlante
as Ed
Mickey Gilbert
as Mickey
Joe Finnegan
as The Intruder
Where does The Intruder Within rank today?
The Intruder Within is #10000 on the CineFlixo Daily Streaming Charts today.
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Watch The Intruder Within Online Free in HD
If you've been searching for The Intruder Within full movie in HD, CineFlixo has you covered. This talked-about Inglés horror, science fiction, and tv movie title from 1981 is available to stream instantly — no ads to fight through, no paid subscriptions, no annoying redirects.
About The Intruder Within
“Terror and death strike as monster preys upon trapped victims!”
When drillers on an offshore oil rig dredge up several prehistoric eggs, one man is attacked by what appears to be an unidentified deep-sea creature protecting them. Soon, strange symptoms and behaviors become apparent among the crew and one of the creatures grows to adult-size. Running 91 minutes.
The Intruder Within Cast and Characters
The cast features Chad Everett (as Jake Nevins), Joseph Bottoms (as Scott), Jennifer Warren (as Colette Beaudroux), Rockne Tarkington (as Mark), and Lynda Mason Green (as Robyn). Their performances are a major reason The Intruder Within has built such a passionate audience.
Where to Watch The Intruder Within Online
Want to watch The Intruder Within online without paying? CineFlixo is the easiest way. Click play and the film starts in seconds. No popups, no "5 day trial that auto-charges" — just the show.
▶ Watch The Intruder Within NowWhy People Are Watching The Intruder Within
The Intruder Within flies under the radar but it deserves your attention. What makes it work is world-building that respects the audience's intelligence. If you enjoy Inglés storytelling that doesn't follow the same tired beats, this is the kind of film you'll end up recommending to friends.
Frequently Asked Questions about The Intruder Within
Where can I watch The Intruder Within online for free?
You can watch The Intruder Within online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How long is The Intruder Within?
The Intruder Within runs for 91 minutes (about 1.5 hours).
Is The Intruder Within good? What's the rating?
The Intruder Within holds a 5.8/10 rating based on 13 reviews — a niche pick worth checking out.
Who is in the cast of The Intruder Within?
The main cast includes Chad Everett, Joseph Bottoms, Jennifer Warren, and Rockne Tarkington, plus a strong supporting ensemble.
Is The Intruder Within available in Inglés?
Yes — The Intruder Within was originally produced in Inglés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was The Intruder Within released?
The Intruder Within was released in 1981.
Do I need an account to watch The Intruder Within on CineFlixo?
No. CineFlixo is free and you can watch The Intruder Within without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Movies You Might Like
If you enjoyed The Intruder Within, check out Godzilla, When Whales Walked: Journeys in Deep Time, The Thing, Mothra vs. Godzilla, and Critters 2.
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Frequently Asked Questions
Common questions about The Intruder Within
Where can I watch The Intruder Within for free?
You can watch The Intruder Within (1981) online for free on CineFlixo. Just click "Watch Free" on this page to start streaming instantly — no account, subscription, or downloads required.
What is The Intruder Within about?
The Intruder Within is a Horror/Science Fiction English-language film. When drillers on an offshore oil rig dredge up several prehistoric eggs, one man is attacked by what appears to be an unidentified deep-sea creature protecting them. Soon, strange symptoms and behaviors become apparent among the crew and one of the creatures grows to adult-size.
When was The Intruder Within released?
The Intruder Within was released on February 20, 1981. It has a runtime of 1h 31m. The film was produced by Furia/Oringer Productions.
Who stars in The Intruder Within?
The Intruder Within stars Chad Everett, Joseph Bottoms, Jennifer Warren and Rockne Tarkington. The full cast list is available in the Cast section above.
Is The Intruder Within available in HD?
Yes, The Intruder Within is available to stream in high definition (HD) on CineFlixo. Our players automatically deliver the best quality your connection supports — no extra setup needed.