In McAuley’s follow-up to Child of the River, named a PW Best Book of 1998, Yama continues his quest for identity, still pursued by the implacable Prefect Corin of the Department of Indigenous Affairs, who would subvert Yama’s burgeoning psychic powers and put them to use in the war against the Heretics. Confluence is a planet-sized, needle-shaped artificial environment set millions of years in...