Alien Island

Earth had not been attacked-no, indeed-and the Visitors were not about to allow the Establishment to intervene between them and the man-in-the-street. The Establishment had, in fact, been spending considerable time, energy and (taxpayers') money on an effort to shield the tender, hyper-sensitive feelings of the public from the panic it assumed would result were it ever to become generally known that the Earth had Visitors-and had been having them for several years. It was, of course, the Establishment which was scared witless. So they were bypassed. And there wasn't a thing the united governments of the Earth could do about it. Except for their unitedly witless Secret Services...