London: Arthur Barker, 1979. 159pp. First edition in first state jacket with the "Capricorn One" advertisement on a white background to the rear jacket flap. A very good copy, slight lean, mild foxing to the edges, very light toning to the endpapers. Jacket flaps and verso slightly foxed, price clipped. Increasingly scarce in the first state jacket, Adam's first book, based on the BBC radio play.