The Quatermass Xperiment (1955)

Unrated  |   |  Horror, Sci-Fi  |  June 1956 (USA)
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In the countryside of London, a rocket crashes on a farm and Professor Bernard Quatermass and Scotland Yard Inspector Lomax arrive in the spot. The rocket was launched by Prof. Quatermass ... See full summary »



(screenplay) (as Richard Landau) , (screenplay), 1 more credit »
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Complete credited cast:
Jack Warner ...
Thora Hird ...
Rosemary 'Rosie' Elizabeth Wrigley
BBC TV producer
David King-Wood ...
Harold Lang ...
Sam Kydd ...
Police sergeant questioning Rosie
Richard Wordsworth ...


In the countryside of London, a rocket crashes on a farm and Professor Bernard Quatermass and Scotland Yard Inspector Lomax arrive in the spot. The rocket was launched by Prof. Quatermass with the astronauts Victor Carroon, Greene and Reichebheim; however only Carroon is found very sick in the cabin. He is transported to a private clinic to stay under observation despite the protests of his wife Mrs. Judith Carroon. She bribes a nurse to bring Carroon to her and she finds that he is transforming into a monster. Carroon escapes killing people and animals during his metamorphosis while the Scotland Yard is hunting him down and Dr. Quatermass discovers that his process is an alien invasion. Written by Claudio Carvalho, Rio de Janeiro, Brazil

Plot Summary | Plot Synopsis


It creeps, it crawls, it kills! See more »


Horror | Sci-Fi


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Release Date:

June 1956 (USA)  »

Also Known As:

The Creeping Unknown  »

Box Office


£45,000 (estimated)

Company Credits

Production Co:

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Technical Specs


Sound Mix:

Aspect Ratio:

1.66 : 1
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Did You Know?


The original British release billed Brian Donlevy and Jack Warner before the main title ("The Quatermass Xperiment"), with Margia Dean heading the supporting cast after the title. For the US release Donlevy, then Ms. Dean, and then Warner were billed before the main title ("The Creeping Unknown"), moving Thora Hird up to the top of the supporting cast, the remaining order of which was not changed. Also, Val Guest did not receive co-screenplay credit on the US credits, Nigel Kneale's credit was altered to simply "Based on the play by", and the Acknowledgments credits were omitted altogether. See more »


When the spaceship is first seen, it is stuck into the ground at an angle of approximately 70 degrees, yet when Quatermass and his team enter, the inside is shown almost level. See more »


Prof. Bernard Quatermass: There's no room for personal feelings in science, Judith!
See more »


Featured in The 100 Greatest Scary Moments (2003) See more »

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User Reviews

Xcellent! Xquisite! Xhelirating!!
23 June 2005 | by (the Draconian Swamp of Unholy Souls) – See all my reviews

You can't even begin to describe how essential (and quintessential) this legendary Hammer-movie in fact is! It was the unexpected success of this movie that single-handedly caused the horror-boom all over Europe! If this adaptation from Nigel Kneale's play hadn't been so popular, Hammer Studios probably never would have started with re-telling other famous franchises, such as "Frankenstein", "Dracula" or "The Mummy". It was "The Quatermass Xperiment" that all of a sudden showed that the audience's hunger for morbid Sci-Fi and fantasy tales is insatiable and Hammer cleverly exploited this given bit by bit. The film itself is about 50 years old now, but it definitely still stands as one of the uncanniest and mesmerizing Sci-Fi films ever made. With its uniquely tense atmosphere, the astonishing performance by Richard Wordsworth and the intelligent script, this movie is an experience that'll keep you on the edge of your seat the whole time. Quatermass is the name of a brilliant (but slightly obnoxious) scientist who – apparently without permission of the legal authorities – launched a rocket with a 3-headed crew into space, to travel distances no other space-mission ever reached. The movie opens when a catastrophe already took place and the rocket crashes just outside London. Two crew members seemly vanished into thin air while the other (Wordsworth) is "possessed" with something. The unfortunate astronaut inexplicably turns into a monster that threatens to extinguish the entire world…

The premise of alien-intelligence invading earth through an unfortunate space-mission is extremely stereotyped by today's standards, but "The Quatermass Xperiment" is one of the only oldies in the genre that still feels genuine and original. A form of criticism I often encountered while browsing through other users' comments is that this production supposedly hasn't dated well and that it's nowhere near scary. Frankly, I don't share this opinion at all. First and foremost because the film suggests more terror rather than showing it explicitly! I am aware that few people nowadays appreciate horror film if it doesn't contain graphic violence and tons of blood, but it really is the unsettling atmosphere what makes this film so brilliant. And besides, I do think that the special and make-up effects are staggering although half a century old. The images of Wordsworth mutating arm wrapped in a filthy overcoat and his facial metamorphose are still definitely creepy! To wrap it all up: "The Quatermass Xperiment" is an exhilarating and trend-setting genre film that should be viewed by every fan of fantasy-flicks. Giant thumbs up for director Val Guest who also made another Hammer classic, "The Abominable Snowman"

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