James Lasdun’s latest novel, billed as a psychological thriller, opens in Brooklyn in the summer of 2012. Charlie and his cousin Matthew are about to leave New York to spend the season in Charlie’s mountain-top residence in the Catskills, where they are to unite with Charlie’s wife, Chloe. The relationship between Charlie and Matthew is ostensibly unequal: Charlie is a wealthy former banker who feels uneasy about the morality of his sometime profession; Matthew is comparatively poor, has drifted in and out of the food industry, is haunted by the absence of his father (who disappeared when Matthew was a...