This is a strange one, to say the least. The premise is intriguing: in television's 1950s infancy, a school teacher creates a hit children's TV show with her son as one of the premier cast members. She then creates an even bigger hit show about TV inventor Philo Farnsworth, again with her son as the title character.
That premise, however, never fully develops into a story. Even though the novel is told by Henry, the son to whom all this is happening, we never really know much about him--his aspirations, his dreams, his fears. He seems to have no friends or relations other than his parents. Is he intentionally depicted as a cypher to make some statement on the vapidity and soul-sucking nature of television?
Beyond Henry, much of what happens seems to take place in an alternate universe. Even though Henry is the star of two massively popular TV shows, we see practically nothing of the other actors on the shows, nothing about agents or managers, publicists, etc. Henry and his family must be very wealthy yet continue to live modestly. Most everyone calls Henry "Philo" even though they know it's not his real name. Yes, that might be a statement about the power of TV to change the nature of reality, but...that probably seldom happened to William Shatner or Bob Denver.
Johnston does seem to make a statement at times about the pitfalls of fame. But ultimately, without a true story with a beginning and an end and real characters, I just didn't care.