For fans of The Age of Miracles and The Dog Stars, Black Moon is a hallucinatory and stunning debut that Charles Yu calls “Gripping and expertly constructed.” Insomnia has claimed everyone Biggs knows. Even his beloved wife, Carolyn, has succumbed to the telltale red-rimmed eyes, slurred speech and cloudy mind before disappearing into the quickly collapsing world. Yet Biggs can still sleep, and...