Details
X The Unknown (Limited Collector's Edition) 4K UHD + Blu-Ray (UK Import)
Hammer Films
Pre-order - Release date: 27.07.2026
Original title: X The Unknown
Year: 1956
Country: UK
Region code: 4K UHD + Blu-Ray: A/B/C
Content: 4K UHD + Blu-Ray
EAN: 5061058621000
Image: 1.37:1 / 1.66:1 / 1.85:1 (2160p)
HDR: Dolby Vision / HDR10
Audio:
English - Original Mono
English - Brand-new 5.1 mix
Subtitles: English, French, Italian, Spanish, German
Age rating: PG
Genre: Science Fiction / Horror
Cast: Dean Jagger, Edward Chapman, Leo Mckern
Director: Leslie Norman
Synopsis:
2026 marks the 70th anniversary of this suspenseful science-horror classic from legendary writer Jimmy Sangster. Often considered an unofficial part of the Quatermass franchise, the film makes its debut on Blu-ray and 4K UHD - the latest to be restored by the teams at Hammer and Silver Salt Restoration.
When a soldier dies from apparent radiation poisoning, the Atomic Energy Commission sends scientist Dr. Royston (Oscar-winner Dean Jagger) to investigate. Despite extensive testing no source can be found - until a mysterious radioactive, mud-like entity resurfaces and begins claiming more victims. What do you do when the killer can’t be stopped - or even understood?
Extras:
This Limited Edition comprises:
- Four discs in a stylish digipak, including 2 UHD and 2 Blu-ray, with the Hammer content duplicated across both formats.
- Three iterations of X the Unknown: the widescreen 1.66:1 UK Theatrical Version, the fullscreen 1.37:1 As-Filmed Version and the widescreen 1.85:1 US Theatrical Version.
- English, French, Italian, Spanish, German subtitles on all versions of the film.
- Brand-new 5.1 mix for 1.37:1 and 1.66:1 versions alongside the original mono film soundtrack.
- Packaged in a high-end, leather-feel slipcase.
- A rigid inner box featuring new artwork by cult favourite Robert Sammelin.
- A double sided poster of original one-sheets
- Eight art cards featuring facsimiles of the original cinema lobby cards.
Discover brand new film commentaries, documentaries, featurettes, and more. The discs feature -
- A Man on the Beach: a rare, early Hammer short film, written by Jimmy Sangster and directed by Joseph Losey (who was due to make X the Unknown).
- New commentary with actor and comedian Toby Hadoke and Nigel Kneale’s biographer Andy Murray.
- New commentary with writer/producer Dr Steve Haberman and film-maker and film historian Constantine Nasr.
- New commentary with film historian David Kalat.
- Archive 2003 commentary featuring writer Jimmy Sangster and Hammer expert Marcus Hearn.
- New commentary on A Man on the Beach by film expert Neil Sinyard.
- New documentary on the making of X the Unknown, with contributions from Toby Hadoke, Andy Murray, Wayne Kinsey, Dick Klemensen and actor Frazer Hines.
- New documentary on special effects maestro Les Bowie, with contributions from Wayne Kinsey, Dick Klemensen, Mike Tilley and archive audio contributions from Christopher Lee, Ian Scoones and others.
- A new documentary following the career of Joseph Losey - the original X the Unknown director who departed the project before shooting commenced - and his storied journey through Hollywood to Hammer films, via blacklisting and exile.
- Sidebar: X the Unknown. Film critic and writer Tim Lucas discusses X and similar films of the period with artist and film historian Stephen R. Bissette.
- Archive Jimmy Sangster interview from 2003.
- Original trailers, censor card and Super 8 cut-down version.
- Extensive image gallery of stills and publicity material.
And A 120-page booklet featuring new articles on the film's production, its relationship to the Quatermass films, cast and crew biographies, script comparisons, and more.
