The narrator of the story, a somewhat naive American admirer of English novelist Mark Ambient, visits the writer at his home in Surrey. The narrator is very enthusiastic about Ambient's work, especially his latest novel Beltraffio. He meets Ambient's beautiful but chilly wife, his sickly seven-year-old son Dolcino, and his strange sister Gwendolyn. He also learns that Ambient's wife strongly dislikes her husband's novels and considers them corrupt and pagan. Dolcino eventually becomes much more ill. In order to "protect" him from what she sees as the baleful influence of his father, Ambient's...