John Longden

Professor Quatermass investigates an area of much meteoric activity and discovers that a government research station is instead a headquarters for gaseous aliens from outer space. Their mission is to invade the bodies of British citizens and government officials, and conquer Earth. Only the courage and scientific skills of the Professor can save the planet.

Suspected of murdering a popular actress, a man enlists the help of a beautiful stranger who must put herself at risk to help him prove his innocence.