Screenplay:
Jimmy SangsterCinematography:
Gerald GibbsComposer:
James BernardCast:
Dean Jagger, Edward Chapman, Leo McKern, Anthony Newley, Peter Hammond, Ian MacNaughton, Kenneth Cope, Philip Levene, Edward Judd, Brown Derby, Shaw Taylor (more)VOD (1)
Plots(1)
Mysterious events surround the sudden appearance of a gaping fissure in Scotland: soldiers on manoeuvres nearby develop a debilitating sickness and a small boy is later engulfed by an eerie presence. The child subsequently dies of first-degree radiation burns, similar to those that killed one of the soldiers. Mankind is at the mercy of a seemingly unstoppable organism that melts the flesh of those in its path. Atomic energy specialist Dr. Adam Royston (Dean Jagger) and his colleague McGill (Leo McKern) investigate the deadly phenomenon, which they trace to the depths of the fissure. As the death toll rises, Royston devises a daring plan to snare the creature in a lethal radioactive trap. X the Unknown was only the second of Hammers horror productions, but contained some of the most grisly and disturbing special effects seen in any of the companys films. (Icon Home Entertainment)
(more)Cast
![Dean Jagger](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/164/361/164361457_1c37a3.jpg)
Dean Jagger
USA
Best movies:
The Nun's Story (1959)
The Proud Rebel (1958)
Vanishing Point (1971)
![Edward Chapman](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/000/271/271478_defc00.jpg)
Edward Chapman
UK
Best movies:
Mandy (1952)
The Early Bird (1965)
Night and the City (1950)
![Leo McKern](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/163/099/163099557_698bc3.jpg)
Leo McKern
Australia
Best movies:
The Omen (1976)
King Lear (1983) (TV movie)
Ryan's Daughter (1970)
![Anthony Newley](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/000/273/273997_94be16.jpg)
Anthony Newley
UK
Best movies:
Oliver Twist (1948)
Doctor Dolittle (1967)
The Battle of the River Plate (1956)
![Peter Hammond](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/160/193/160193927_cf0916.jpg)
Peter Hammond
UK
Best movies:
X the Unknown (1956)
![Ian MacNaughton](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/000/273/273100_abf7e9.jpg)
Ian MacNaughton
UK
Best movies:
Lawrence of Arabia (1962)
The Silent Enemy (1958)
Prometheus (2012) - a.f.
![Kenneth Cope](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/000/270/270942_404ccc.jpg)
Kenneth Cope
UK
Best movies:
Juggernaut (1974)
Miss Marple: Sleeping Murder (1987) (TV movie)
Captives (1994)
Philip Levene
UK
Best movies:
Reach for the Sky (1956)
X the Unknown (1956)
![Edward Judd](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/159/000/159000205_557c97.gif)
Edward Judd
China
Best movies:
O Lucky Man! (1973)
The Hound of the Baskervilles (1983) (TV movie)
Jack the Ripper (1988) (TV movie)
Brown Derby
UK
Best movies:
The Queen of Spades (1949)
X the Unknown (1956)
Shaw Taylor
UK
Best movies:
The Medusa Touch (1978)
X the Unknown (1956)
![William Lucas](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/161/527/161527275_3b2442.jpg)
William Lucas
UK
Best movies:
Tower of Evil (1972)
Sons and Lovers (1960)
X the Unknown (1956)
![John Stone](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/161/380/161380059_2bee3d.jpg)
John Stone
UK
Best movies:
Agatha Christie's Poirot (1989) (series)
Reach for the Sky (1956)
You Only Live Twice (1967)
![Edwin Richfield](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/161/388/161388183_fcf11c.jpg)
Edwin Richfield
UK
Best movies:
Ben-Hur (1959)
The Dam Busters (1955)
Sink the Bismarck! (1960)
![Archie Duncan](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/161/394/161394424_ee21a9.jpg)
Archie Duncan
UK
Best movies:
Ring of Bright Water (1969)
The Lavender Hill Mob (1951)
The Horror of It All (1963)
![Neil Wilson](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/161/443/161443246_67efe3.jpg)
Neil Wilson
UK
Best movies:
A Clockwork Orange (1971)
A Hard Day's Night (1964)
The Early Bird (1965)
![Anthony Sagar](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/161/483/161483264_1319a9.jpg)
Anthony Sagar
UK
Best movies:
The Early Bird (1965)
The One That Got Away (1957)
I Was Monty's Double (1958)
![Frazer Hines](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/161/593/161593267_3729c8.jpg)
Frazer Hines
UK
Best movies:
Doctor Who: The Five Doctors (1983) (TV movie)
The Last Valley (1971)
A King in New York (1957)
![John Harvey](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/161/593/161593444_56e0be.jpg)
John Harvey
UK
Best movies:
The Devil's Disciple (1959)
Sacco and Vanzetti (1971)
Stage Fright (1950)
![Neil Hallett](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/162/742/162742375_3ca64f.jpg)
Neil Hallett
Belgium
Best movies:
Thunderball (1965)
The Four Feathers (1978) (TV movie)
The Zany Adventures of Robin Hood (1984) (TV movie)