A young man, known as 'Boy', is born with no fingernails and with mental powers that enable him to control others. He falls for a young actress, initially repulsed, whose agent-boyfriend encourages the relationship because he thinks Boy's powers can be used to make a lot of money via TV commercials. But he is being hunted by a mysterious surveillance team who have moved into the next-door flat in the tower block where he lives...

Déja vu: as Guy Birkett goes through the day he has a nagging feeling that he's been here before, experienced this already; except the details are always different. Is it conceivable that he is merely a simulacrum, the ultimate in consumer market surveying? He finds there is a reality behind the reality he knows; but for a pawn to question the reality of the chessboard is a perilous undertaking.

The positronic brain of robot RB-34(Herbie) has an unforeseen 'extra': he can read human thoughts. So his take on the First Law of Robotics ("A robot may not harm a human being or, through inaction, allow a human being to come to harm") is unorthodox: he tells human beings only what he believes will not hurt their feelings. Can renowned robopsychologist Dr. Susan Calvin 'fix' RB-34? Or are there areas of her own psyche where she would rather not hear the truth?