Jaime Deza, separated from his wife in Madrid, is at loose ends in London when his old friend Sir Peter Wheeler, a retired Oxford don, introduces him to the head of a secret government bureau of elite analysts with the ability to see past people's facades and predict their future behavior. A cocktail party test proves Deza to be one of the elect, and he goes to work clandestinely observing all sorts of people, from South American generals to pop stars....