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X the Unknown

Play trailer Poster for X the Unknown 1956,  1h 20m,  Sci-Fi Play Trailer Watchlist
Watchlist 71% 7 Reviews Tomatometer 44% 250+ Ratings Popcornmeter
71% Tomatometer 7 Reviews 44% Popcornmeter 250+ Ratings
An atomic researcher in Scotland links radiation burns to throbbing mud from the center of the Earth.

Critics Reviews

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Chris Ward Flickering Myth Aug 3, 2026
4/5
X the Unknown is terrific fun and a well-made genre entry that is obviously showing its age nowadays but, when put into context of the time it originally came out, stands head and shoulders above other notable films that are probably better known. Go to Full Review
Eddie Harrison film-authority.com Feb 13, 2021
3/5
X-The Unknown shares with the Quatermass movies a belief in science rather than the motives of government…a creation of the Hammer horror studio before they discovered blood, gore, girls and other blandishments to offer the audience… Go to Full Review
MFB Critics Monthly Film Bulletin Mar 3, 2019
After a series of prolonged climaxes, with its potential victims staring directly into the camera and shaking with fright, the "Unknown" finally emerges as a type of rolling rubber mattress, disappointingly unhorrific in content and appearance. Go to Full Review
Dennis Schwartz Dennis Schwartz Movie Reviews Oct 7, 2005
B
Despite its absurd storyline, it's a surprisingly entertaining film that won't deaden your brain cells even if it's a trashy B film sci-fier. Go to Full Review
Emanuel Levy EmanuelLevy.Com Aug 10, 2005
2/5
Randy Shulman Metro Weekly (Washington, DC) Mar 18, 2005
3/5
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Audience Reviews

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Han M May 22, 2017 Truly abysmal low low budget Quatermass rip-off with none of Nigel Kneale's intelligence, and pedestrian direction by Leslie Norman. Poor Dean Jagger, fresh from being serenaded by Crosby and Kaye in White Christmas, is lumbered with most of the terrible script. Even good actors like Leo McKern and Edward Chapman sink without trace, but you'll probably be asleep before you notice. See more
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X the Unknown

My Rating

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Cast & Crew

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Leslie Norman

Director

Joseph Losey

Director

Dean Jagger

Dr. Adam Royston

Leo McKern

Insp. McGill

Edward Chapman

John Elliott

Marianne Brauns

Zena

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X the Unknown

X the Unknown (1956) X the Unknown (1956) X the Unknown (1956) View more photos

Movie Info

Synopsis An atomic researcher in Scotland links radiation burns to throbbing mud from the center of the Earth.
Director
Leslie Norman, Joseph Losey
Producer
Anthony Hinds
Screenwriter
Jimmy Sangster
Genre
Sci-Fi
Original Language
English
Runtime
1h 20m
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