Two years before The Blob emerged from a meteor that landed in Pennsylvania and started devouring very old teenagers, over in Scottland, a very similar creature started attacking the locals. Except this one didn’t come from outer space, from within the bowels of the earth. In X – The Unknown (1956), during some mine detection training with the army, the radioactive material used drew the attention of some creature that breaks loose onto the surface, leaving a couple of soldiers with severe radiation burns. Except with no witnesses, and the creature going back down underground, nobody can figure out what could have caused the burns on the men. That’s when you call in the scientist, Dr. Royston, played by American star Dean Jagger, which was a common thing to do for British pictures to help with foreign distribution. You also have Michael Ripper as one of the sergeants in the military.