The Fairy Chessman

Robert Cameron, trained in applied psychology, finds himself being driven insane by a strange, unfathomable force. As an experienced psychometrician he fights the terrifying hallucinations (a doorknob opens a blue eye and looks at him). He, too, knows his job is vital. American, dug into great, shielded cavern-cities, has been at war for decades with the European Falangists, a war planned by technicians and fought by robots. Now a new Falangist weapon has appeared to break the stalemate. And it is up to Cameron to find the man to provide the solution - before his own mind collapses under the weird and terrible madness!