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
Casts:
Dean Jagger, Leo McKern, William Lucas, Edward Chapman, John Harvey, Anthony Newley, Ian MacNaughton, Peter Hammond, Michael Ripper, Kenneth Cope, Michael Brooke, Frazer Hines, Neil Wilson, Jameson Clark, Jane Aird, Robert Bruce, John Stone, Marianne Brauns, Brown Derby, Norman Macowan, Edwin Richfield, Neil Hallett