X the Unknown (Hammer Films)

Oscar-winner Dean Jagger stars as an irascible scientist in this grittily thrilling science-horror film from legendary Hammer writer Jimmy Sangster. When an unlucky soldier dies in agony from radiation poisoning, the Atomic Energy Commission sends Dr. Royston to investigate, uncovering a deadly threat that begins to claim new victims.

• Starring Dean Jagger, Edward Chapman, and Leo Mckearn.
• Directed by Joseph Losey and Leslie Norman.
• Painstakingly restored in 4K from the original film negatives by Hammer.
• Includes three iterations of the film on two discs: 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.
• Features a brand-new 5.1 mix for all three versions, alongside the original mono film soundtrack.
• Includes English, French, Italian, Spanish, and German subtitles on all versions.

• Making-of documentary about the production of X the Unknown.
• New and archive commentaries with experts including Nigel Kneale biographer Andy Murray, film historian David Kalat, and writer/producer Dr Steve Haberman.
• Displaced and Damned: A documentary following the career of Joseph Losey, the original director who departed the project before shooting commenced.
• An exploration of the groundbreaking work of special effects artist, Les Bowie, including archive audio interviews and audio from Christopher Lee.
• A Man on the Beach: The rarely seen short film featuring Jimmy Sangster's first scripted work and directed by Joe Losey.

• Brand/Studio: Hammer Films
• Media Format: Blu-ray
• Run Time: 1 hour and 20 minutes
• Release Date: 27 July 2026
• Actors: Dean Jagger, Edward Chapman, Leo Mckearn
• Directors: Joseph Losey, Leslie Norman
• Rating: Parental Guidance
• Package Dimensions: 19 x 13.5 x 1.5 cm; 300 g
• Languages: English, French, Italian, Spanish
• EAN: 5061058621154

This comprehensive two-disc Blu-ray edition offers multiple versions of the classic science-horror film, extensive new bonus features, and 4K restoration quality.