![X: The Unknown X: The Unknown (1956) Official Image | AndyDay](https://img.andyday.tv/xxrz/250x400/697/40/0b/400b5c88503d3627e105ddf07228d1e4/400b5c88503d3627e105ddf07228d1e4.jpg)
X: The Unknown
When a fissure explosively opens in an English mud flat during a military exercise there, injuring one soldier and killing another, an American research scientist at a nearby nuclear plant joins with a British investigator to discover why the victims were radioactively burned and why, shortly thereafter, a series of radiation-related incidents are occurring in an ever-growing straight line away from the fissure.
Released: 1956-09-21