Two Discs Featuring Three Iterations Of The Film:
- The Widescreen 1.66:1 UK Theatrical Version
- The Fullscreen 1.37:1 As-Filmed Version
- 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, 1.66:1 And 1.85:1 Versions, Alongside The Original Mono Film Soundtrack
Discover Brand New Film Commentaries, Documentaries, And More.

The Discs Include:
Making-Of Documentary About The Production Of "X The Unknown"
New And Archive Commentaries With Experts That Include; Nigel Kneale Biographer Andy Murray, Film Historian David Kalat, Writer/Producer Dr Steve Haberman
Displaced And Damned: A 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
An Exploration Of The Groundbreaking Work Of Special Effects Artist, Les Bowie, Including Archive Audio Interviews With Fellow Special Effects Technicians 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
And More!