Release CalendarTop 250 MoviesMost Popular MoviesBrowse Movies by GenreTop Box OfficeShowtimes & TicketsMovie NewsIndia Movie Spotlight
    What's on TV & StreamingTop 250 TV ShowsMost Popular TV ShowsBrowse TV Shows by GenreTV News
    What to WatchLatest TrailersIMDb OriginalsIMDb PicksIMDb SpotlightFamily Entertainment GuideIMDb Podcasts
    OscarsCannes Film FestivalStar WarsAsian Pacific American Heritage MonthSummer Watch GuideSTARmeter AwardsAwards CentralFestival CentralAll Events
    Born TodayMost Popular CelebsCelebrity News
    Help CenterContributor ZonePolls
For Industry Professionals
  • Language
  • Fully supported
  • English (United States)
    Partially supported
  • Français (Canada)
  • Français (France)
  • Deutsch (Deutschland)
  • हिंदी (भारत)
  • Italiano (Italia)
  • Português (Brasil)
  • Español (España)
  • Español (México)
Watchlist
Sign In
  • Fully supported
  • English (United States)
    Partially supported
  • Français (Canada)
  • Français (France)
  • Deutsch (Deutschland)
  • हिंदी (भारत)
  • Italiano (Italia)
  • Português (Brasil)
  • Español (España)
  • Español (México)
Use app
  • Cast & crew
  • User reviews
  • Trivia
  • FAQ
IMDbPro

X the Unknown

  • 1956
  • Approved
  • 1h 21m
IMDb RATING
6.1/10
3.5K
YOUR RATING
X the Unknown (1956)
Theatrical Trailer from Warner Bros. Pictures
Play trailer0:31
1 Video
30 Photos
HorrorSci-Fi

A radioactive, mud-like creature terrorizes a Scottish village.A radioactive, mud-like creature terrorizes a Scottish village.A radioactive, mud-like creature terrorizes a Scottish village.

  • Directors
    • Leslie Norman
    • Joseph Losey
  • Writer
    • Jimmy Sangster
  • Stars
    • Dean Jagger
    • Edward Chapman
    • Leo McKern
  • See production info at IMDbPro
  • IMDb RATING
    6.1/10
    3.5K
    YOUR RATING
    • Directors
      • Leslie Norman
      • Joseph Losey
    • Writer
      • Jimmy Sangster
    • Stars
      • Dean Jagger
      • Edward Chapman
      • Leo McKern
    • 82User reviews
    • 59Critic reviews
  • See production info at IMDbPro
  • Videos1

    X the Unknown
    Trailer 0:31
    X the Unknown

    Photos30

    View Poster
    View Poster
    View Poster
    View Poster
    View Poster
    View Poster
    View Poster
    + 23
    View Poster

    Top cast42

    Edit
    Dean Jagger
    Dean Jagger
    • Dr. Adam Royston
    Edward Chapman
    Edward Chapman
    • John Elliott
    Leo McKern
    Leo McKern
    • Insp. 'Mac' McGill
    Anthony Newley
    Anthony Newley
    • LCpl. 'Spider' Webb
    Jameson Clark
    Jameson Clark
    • Jack Harding
    William Lucas
    William Lucas
    • Peter Elliott
    Peter Hammond
    Peter Hammond
    • Lt. Bannerman
    Marianne Brauns
    • Zena, the Nurse
    Ian MacNaughton
    • Haggis
    • (as Ian McNaughton)
    Michael Ripper
    • Sgt. Harry Grimsdyke
    John Harvey
    • Maj. Cartwright
    Edwin Richfield
    Edwin Richfield
    • Soldier Burned on Back
    Jane Aird
    • Vi Harding
    Norman MacOwan
    Norman MacOwan
    • Old Tom
    • (as Norman Macowan)
    Neil Hallett
    Neil Hallett
    • Unwin
    • (as Neil Hallet)
    Kenneth Cope
    Kenneth Cope
    • Sapper Lansing
    Michael Brooke
    • Willie Harding
    • (as Michael Brook)
    Frazer Hines
    Frazer Hines
    • Ian Osborn
    • (as Fraser Hines)
    • Directors
      • Leslie Norman
      • Joseph Losey
    • Writer
      • Jimmy Sangster
    • All cast & crew
    • Production, box office & more at IMDbPro

    User reviews82

    6.13.4K
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10

    Featured reviews

    march9hare

    Y should you see this film

    Dean Jagger battles radioactive goo from the center of the earth in this 1956 Hammer outing. Unlike "The Blob", released 2 years later, this creepy little horror story is played straight; no attempt at camp here! Dean Jagger, Leo McKern, and Anthony Newley play their parts with a subtlety and professionalism that's rarely matched in similar period pieces. While this film was overshadowed by it's American counterpart (see above), it remains one of Hammer's better efforts and should be judged on it's own. Yes, the premise is a bit hard to believe, but, once you get past that, everything else in this film works, from the direction to the score to the dialog, and of course the acting. In short, this is an underexposed, tight little chiller that has just the right amount of genuine suspense and believable characters. Don't miss it.
    telepinus1525

    Hard SF classic creepy from start to finish

    Back in the days when "Prince Valiant" still covered most of a page in the Sunday funnies, I first saw this wonderfully creepy SF sleeper. From the opening scenes of a stretch of the Scottish moors opening up under a British soldier's feet, I was hooked. I was very lucky that my parents didn't send me to bed then(although they did right in the middle of "From Hell It Came", but that's another story); I was resolved to catch it again just to get that creepy feeling! The ominous P.O.V. shots of the "X" monster shambling through the barren woods at night, the outrageous "melting" death by hard radiation of the medical tech in the X-ray room, Dean Jagger as Dr. Royston, describing his new invention that can (theoretically) speed up decay of radioactive materials without causing flare-ups(!) simply by leeching away its' energy, and the film's creepy, near-ambiguous ending ("We did destroy it...didn't we?") showed just what you could--and can!--still do with a small budget and respect for the material.
    7vmwrites

    A Hammer Films Classic

    Often overlooked even by those who enjoy the sci-fi films of the fifties, "X The Unknown" is one of those sleepers that real afficionados will watch over and over. Starring Dean Jagger, the cast also features a very young Anthony Newly as a British Army corporal.

    There's not much that professional critics would find either amusing or compelling about this film, but when considered in its place as a landmark movie both for the sci-fi genre and for Hammer films, it shines somewhat brighter.

    As has aready been mentioned, this film occupies a prominent role among those that feature a "blob" monster. The special effects, incidentally, are not bad for the year (1956), and the concept of a radioactive blob is perhaps even more interesting than one that merely gobbles up people.

    I understand that this was one of the early films produced by Hammer, as a step toward making more sci-fi entries. I'm glad they took the chance. This film and those that followed it enriched the genre for all fans of 1950's and 1960's sci-fi films.
    6Prismark10

    A blob in Scotland

    X: The Unknown from Hammer Films was intended to be a sequel to the film, The Quatermass Xperiment. Objections from the writer Nigel Kneale meant that the plot of the film was reworked.

    The original director was slated to be the noted American blacklisted Joseph Losey who started shooting the film but due to illness had to be replaced by Leslie Norman (Father of film critic Barry Norman.)

    This is an unpretentious film dealing with issues with nuclear radiation very much in vogue in the 1950s in horror and sci-fi films. The films also predates The Blob by a few years which was more campy.

    Soldiers in Scotland discover a bottomless crack in the ground with a mysterious source of radiation activity. An explosion kills a few of the soldiers from radiation burns. Soon several more people die of radiation burns.

    American actor Dean Jagger plays Dr Royston from an Atomic Laboratory who hypothesized that a form of life from prehistory trapped in the crust of the Earth, tries to reach the surface every 50 years depending on the alignment of the sun and tidal waves in order to find food from radioactive sources.

    As the entity, a glowing blob feeds on radiation its mass increases as it tries to make its way to nuclear plants to find more radiation.

    The film has a mix of good special effects especially with people melting and some ropey ones as the blob moves taking over the town or with fire explosions that look like a match going off. A lot of the horror is off camera but the film maintain its thrills.

    The acting from Dean Jagger and Leo McKern is straightforward. It has a fair amount of thrills such as a little girl being left behind in a church as the blob approaches or at the climax when a jeep gets stuck in the mud.
    Snow Leopard

    Enjoyable Sci-Fi, & Well-Crafted For Such a Low Budget Movie

    Sometimes these low-budget science fiction features are amusing for unintended reasons, but this one is enjoyable because it has an interesting story and because it is well-crafted for such a low-budget movie. Since its effectiveness comes mostly from the story and from the solid acting, even with a bigger budget it might not have been significantly better.

    The menace of "X the Unknown" is based on a far-fetched but interesting concept, and the story gets good mileage out of the premise, without pushing it too far. There are a couple of plot holes, but not so bad that they pull it down, and in general the story has the kind of internal logic that holds it together as long as you grant the premise for the sake of a good story.

    The cast does surprisingly well. The characters are not the kind of roles that are particularly difficult to play, but they are the kind of roles that are easy to overplay, and that often are overplayed. Here the actors make their characters lifelike without trying to grab the attention, and it works pretty well.

    Dean Jagger has good presence as Professor Royston, yet he avoids the kinds of stereotypes that sometimes make such characters annoying. Some of his little habits and mannerisms help to make the professor more human. Leo McKern also turns in a good performance. Edward Chapman's character is quite one-dimensional, yet he does a creditable job with it. It's also rather fun to see a very young-looking Anthony Newley in a small but entertaining role.

    All of the cast members do a good job with a script that is plain but workmanlike. The special effects are rudimentary in technique, but they are good enough, and it's certainly preferable to have plain-looking special effects and a good story than to have flashy visuals and a dreary, pointless story. As a whole, "X the Unknown" delivers good science fiction without frills or padding, and it's easily among the better of the 1950s low-budget sci-fi movies.

    More like this

    Quatermass 2
    6.7
    Quatermass 2
    The Quatermass Xperiment
    6.6
    The Quatermass Xperiment
    The Abominable Snowman
    6.4
    The Abominable Snowman
    The Snorkel
    6.7
    The Snorkel
    The Man Who Could Cheat Death
    6.3
    The Man Who Could Cheat Death
    Quatermass and the Pit
    7.0
    Quatermass and the Pit
    The Stranglers of Bombay
    6.2
    The Stranglers of Bombay
    The Shadow of the Cat
    6.3
    The Shadow of the Cat
    The Reptile
    6.1
    The Reptile
    Stranger on the Prowl
    6.5
    Stranger on the Prowl
    The Plague of the Zombies
    6.5
    The Plague of the Zombies
    Maniac
    5.9
    Maniac

    Storyline

    Edit

    Did you know

    Edit
    • Trivia
      The film was originally intended to have been a sequel to another Hammer success, The Quatermass Xperiment (1955), but creator Nigel Kneale vetoed the use of his character(s) by another writer - hence Prof. Bernard Quatermass swiftly became Dr. Adam Royston.
    • Goofs
      Lansing watches the stick sinking in a pool of liquid, but in a later long shot the stick in seen firmly standing in dry ground.
    • Quotes

      Major Cartwright: You know this Royston chap - brilliant, of course, I'm sure - but the trouble with some of these scientific types is they can't see the easy way out of anything. It's got to be complicated if it's going to work.

    • Connections
      Featured in TJ and the All Night Theatre: X the Unknown (1979)
    • Soundtracks
      Serenade for Strings in E Major, Op. 22: V. Finale: Allegro vivace
      (uncredited)

      Written by Antonín Dvorák

    Top picks

    Sign in to rate and Watchlist for personalized recommendations
    Sign in

    FAQ16

    • How long is X the Unknown?Powered by Alexa

    Details

    Edit
    • Release date
      • May 1957 (United States)
    • Countries of origin
      • United Kingdom
      • United States
    • Language
      • English
    • Also known as
      • XX unbekannt
    • Filming locations
      • Beaconsfield Gravel Pits, Beaconsfield, Buckinghamshire, England, UK
    • Production company
      • Hammer Films
    • See more company credits at IMDbPro

    Box office

    Edit
    • Budget
      • $60,000 (estimated)
    See detailed box office info on IMDbPro

    Tech specs

    Edit
    • Runtime
      1 hour 21 minutes
    • Color
      • Black and White
    • Aspect ratio
      • 1.85 : 1

    Related news

    Contribute to this page

    Suggest an edit or add missing content
    X the Unknown (1956)
    Top Gap
    By what name was X the Unknown (1956) officially released in India in English?
    Answer
    • See more gaps
    • Learn more about contributing
    Edit page

    More to explore

    Recently viewed

    Please enable browser cookies to use this feature. Learn more.
    Get the IMDb app
    Sign in for more accessSign in for more access
    Follow IMDb on social
    Get the IMDb app
    For Android and iOS
    Get the IMDb app
    • Help
    • Site Index
    • IMDbPro
    • Box Office Mojo
    • License IMDb Data
    • Press Room
    • Advertising
    • Jobs
    • Conditions of Use
    • Privacy Policy
    • Your Ads Privacy Choices
    IMDb, an Amazon company

    © 1990-2025 by IMDb.com, Inc.