Workers renovating the London Underground discover what they at first take to be an unexploded World War II bomb. On closer inspection it turns out to be a great deal more mysterious - a spaceship, millions of years old, bearing the fossilized bodies of dead aliens. Professor Quatermass, unconventional science expert, is brought in to bring to light this disturbing discovery, which turns out to have unforeseen effects on the local populace. One of the best of the science fiction films produced by Hammer in the 1960s, QUATERMASS AND THE PIT is a true sci-fi mindbender.