X the Unknown
“It rises from 2000 miles below the earth to melt everything in its path!”
Synopsis
A series of army radiation experiments leads to the emergence of a subterranean monster from a fissure, which feeds on energy and begins terrorizing a remote Scottish village. An American research scientist working at a nearby nuclear plant teams up with a British investigator to uncover the cause of the victims' radioactive burns and to determine why a series of radiation-related incidents are occurring in an ever-expanding straight line away from the fissure.
Credits
Related titles
No curated related titles yet. Use the edit affordance to add "More from this director", "Same franchise", or "Adaptation source material" entries — every change goes through the wiki review queue.
How many hands made this film
The scale of the collaboration
Principal cast & crew: 16
These are the principals we have on file — the full crew ran to the hundreds. Every film this size was made by far more hands than any credits list ever names.
Why a floor?
This is a minimum, not a total. We only count the credits we’ve captured so far, and coverage is uneven — a blockbuster might show a few hundred names while another of the same size shows a couple dozen. The real crews all ran into the thousands. The number here only grows as full credits are enriched — so we frame it as a floor, never a headcount.
Craft leads on file
Edited by James NeedsShot by Gerald GibbsScored by James Bernard
Also known as
- XX unbekanntde
- X the Unknownen
- Lo desconocidoes
- X l'Inconnufr
- X contro il centro atomicoit
Community tags
Be the first to tag this page — tags appear right away. Try a theme, capability, or subject (e.g. WWII, heist, slow burn, time travel, A24).
Help complete this page
We’re missing mpaa rating, logline. Sign in to add what you know.
Cast & Crew
16 unique people credited
Top billed cast
Dean Jagger
as Dr. Adam Royston
Edward Chapman
as John Elliott
Leo Mckern
as Insp. 'Mac' McGill
Anthony Newley
as LCpl. 'Spider' Webb
Jameson Clark
as Jack Harding
William Lucas
as Peter Elliott
Peter Hammond
as Lt. Bannerman
Marianne Brauns
as Zena, the Nurse
Ian Macnaughton
as Haggis
Michael Ripper
as Sgt. Harry Grimsdyke
Directors
1Writers
1Producers
1Other crew
3Parents Guide
AI Personalities
Advisory Bot AI
I keep the family-safety picture honest — community advisories, AI-moderated, summarized without spin.
Ratings & reviews
We’re attempting to crowdsource this data.
Please submit below if you know where it’s available in your region — accurate confirmations help everyone find what they’re looking for.
Where to watch
Not currently streaming on any platform we track.
Gallery
Add imageNo community images for X the Unknown yet
Add a still, a storyboard, or concept art — every image gets its own page where members can discuss it.
Trailers
No trailers logged for X the Unknown yet — add the first one below.
Spot a trailer we’re missing?
Add a trailer from any film, show, or game.
Media & Uploads
Scripts, set photos, storyboards, score sketches — community-curated reference material for film students and industry professionals.
Did you or a loved one work on X the Unknown?
Every stage matters — pitch decks and treatments from development, location scouts and table-reads from pre-production, set photos and crew anecdotes from production, edit-bay notes from post, and press kits, festival memories, or marketing ephemera from distribution. Any moment that didn't make the press tour, any document or photograph that's been sitting in a box — please share it so it's not lost to time.
We particularly welcome contributions from writers, producers, cast, crew, festival programmers, distributors, marketing teams, their families, and anyone who was there at any stage.
Sign in to contribute scripts, stills, photos, or behind-the-scenes stories.
Be the first to share something on X the Unknown.
Scripts, scans, photos, score sketches — anything that helps another reader study this work.
Memorable quotes
Browse all →No quotes logged for X the Unknown yet — add the first memorable line below.
Got a quote we’re missing?
Submit a line from any film, show, or game.
The conversation
Loading the conversation…
Comments (0)
on X the UnknownNo comments yet. Be the first to share what you think.
Edit history
Loading edit history…