The Quatermass Trilogy, Nigel Kneale (1959-60). Conceptual cover designs for the British sci-fi trilogy: Mutating astronauts, alien conspiracies and the origins of the human race are explored in this trilogy of novels. The first manned space-rocket plummets back to earth, three astronauts left, only one returns—a man too shocked to tell what happened...Reports of UFO sightings suppressed, meteorite strikes and a clandestine government project...A skeleton that contradicts Man's ancestry along with a vast rocket made of material unknown to science...