Movie

X: The Unknown

“It rises from 2000 miles below the earth to melt everything in its path!”

★ 6.1(74)19561h 21m

X: The Unknown isn't available to stream, rent or buy in Mexico right now. Availability changes often, so check back soon. Availability checked 11 June 2026.

Where to watch X: The Unknown

🇲🇽 Mexico

No streaming, rental or purchase options are listed in Mexico right now. Availability changes often — try switching your region in the header.

Streaming in other regions

🇪🇸 ES🇫🇷 FR🇬🇧 GB🇮🇪 IE🇺🇸 US

Good to know

Director: Leslie Norman
Release date: 1956-09-21
Runtime: 1h 21m
Language: English
Status: Released
Country: United Kingdom
Studio: Hammer Film Productions

X: The Unknown — trailer

About X: The Unknown

X: The Unknown is a 1956 movie in the Horror, Science Fiction and Mystery genres, directed by Leslie Norman, starring Dean Jagger, Leo McKern and William Lucas. It has a runtime of 1 hour 21 minutes. It holds an average rating of 6.1/10 from 74 viewers. Below you can see where to watch X: The Unknown in Mexico — across streaming, rental and purchase options — along with the full cast, trailer and viewer reviews.

Synopsis

Army radiation experiments awaken a subterranean monster from a fissure that feeds on energy and proceeds to terrorise a remote Scottish village. An American research scientist at a nearby nuclear plant joins with a British investigator to discover why the victims were radioactively burned and why, shortly thereafter, a series of radiation-related incidents are occurring in an ever-growing straight line away from the fissure.

Cast

Dean Jagger

Dr. Adam Royston

Leo McKern

Inspector McGill

William Lucas

Peter Elliott

Edward Chapman

John Elliott

John Harvey

Maj. Cartwright

Michael Ripper

Sgt. Harry Grimsdyke

Anthony Newley

LCpl. 'Spider' Webb

Ian MacNaughton

Pvt. Haggis

Peter Hammond

Lt. Bannerman

Kenneth Cope

Pvt. Lansing

Michael Brooke

Willie Harding

Frazer Hines

Ian Osborn

Themes & keywords

monsterscotlandradiationradioactivity

Frequently asked questions

Where can I watch X: The Unknown in Mexico?+

X: The Unknown is not currently listed on any streaming, rental or purchase service in Mexico. Availability changes often, so check back or switch your region.

Is X: The Unknown on Netflix?+

X: The Unknown is not on Netflix in Mexico right now.

How long is X: The Unknown?+

X: The Unknown has a runtime of 1 hour 21 minutes (81 minutes).

Who stars in X: The Unknown?+

X: The Unknown stars Dean Jagger, Leo McKern, William Lucas, Edward Chapman and John Harvey.

When did X: The Unknown come out?+

X: The Unknown is a 1956 movie directed by Leslie Norman.

What genre is X: The Unknown?+

X: The Unknown is Horror, Science Fiction and Mystery film.

Who directed X: The Unknown?+

X: The Unknown was directed by Leslie Norman.