X: The Unknown (UK Limited Edition 4K UHD/Blu-ray)

X: The Unknown (UK Limited Edition 4K UHD/Blu-ray) - Hammer Films 4K UHD + Blu-ray
Hammer Films 4K UHD + Blu-ray July 27, 2026 Releases in 81 days

2026 marks the 70th anniversary of this suspenseful science-horror classic from legendary writer Jimmy Sangster as X the Unknown makes its worldwide premiere in 4K. Widely regarded as the missing part of the Quatermass franchise, this is the latest film 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?

The first 500 orders will receive our new limited-edition X the Unknown mission patch!