Plot
Gathered on a bleak, frigid Scottish moor, a group of soldiers is training to locate radioactive material when a private’s Geiger counter suddenly goes wild. Moments later, the earth opens up and a mud-like mass seeps out of the ground, leaving the poor young man with critical radiation burns and his comrades-in-arms terrified before abruptly returning to the abyss.
Dr. Adam Royston, a noted physicist conducting experiments in the field of radioactive materials, is called in by the military to shed light on the disturbing phenomenon. Astutely connecting a string of extraordinary events with the inexplicable appearance of the menacing sludge, the scientist theorizes that a deadly, prehistoric entity of pure energy has emerged from the bowels of the planet in search of food in the form of radioactive material.
In fact, growing larger at it feeds on radioactive compounds (“And these forces are almost pure energy, and what does energy live on? […] Energy can only be fed with more energy, or radiation, if you like“), the blob-like entity begins inexorably bearing down on an experimental nuclear center, exposing anyone who stands in its way to deadly radiation. How can they fight an enemy like that?
This thing can take up any shape it needs to.
Critique
6.5Fresh off the wild success achieved by “The Quatermass Xperiment” (1955), British Hammer Films decided to stick with science fiction, making what was initially conceived to be a sequel to that well-received Val Guest movie, only later to be forced to change course in the face of Nigel Kneale’s categorical refusal to allow the use of his character’s name (the “Quatermass” creator apparently vetoed the project because he was informed of it only after the screenplay had already been completed – by writer Jimmy Sangster). Consequently, the protagonist scientist was forced to change his name (Adam Royston), face (actor Dean Jagger), and even his personality (definitely more even-tempered and less bossy than the irascible Bernard Quatermass, who will return only with the upcoming “Quatermass II“, 1957).
Despite suffering from behind-the-scenes tribulations involving its direction, which passed from the blacklisted Joseph Losey to the ho-hum Leslie Norman, “X the Unknown” remains a noteworthy work overall, in that it places intelligent dialogue and the exploration of stimulating concepts ahead of mere showmanship and spectacle. One of the most interesting themes is the application of Darwinian theory to an entity that, although lacking traditional biological characteristics (“This isn’t a living organism, as we know it. Its life source may be the same [radiation] as we’ve got here“), appears subject to the same dynamics outlined in the principles of modern evolutionary theories.
From a figurative point of view, what comes across is a certain taste for the macabre (bodies liquified, faces stripped of flesh, children fatally burned), an early indication of the path the British production company would soon embark upon, the same path that would lead Hammer to excel in the realm of pure horror a few years down the road.
Highlights: 1) the blob breaking through the cemetery wall as the little girl watches, captivated; 2) the surprising epilogue which leaves us with a note of uncertainty and the sinking feeling that something’s still amiss despite humanity’s apparent triumph (a revealing warning that science is still far from understanding and coping with the complexity of natural phenomena).
More Info
Quotes
- What's more natural in their search for survival than that they should return to the face of the planet where once they lived?
- You know, obviously... this thing can take up any shape it needs to.
- It was like something out of a nightmare, it was horrible.
Trivia
- The “X” creature appears nearly two years before its more famous “cousin” shows up in “The Blob” (1958).
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![]() | Piccola enciclopedia degli ultracorpi. I B-movies inglesi degli anni Cinquanta e Sessanta (Vol. 3) |
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![]() | XX... Unbekannt - Limited Edition- Hammer Edition Nr. 35 [Blu-ray] |
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![]() | X the Unknown [Blu-ray] |





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