" Straddling the line between psychological thriller and domestic horror, Sierra's auspicious debut immediately plunges readers headlong into its unnamed protagonist's waking nightmare . . . tense, emotionally resonant . . . Well-timed flashbacks add context and poignancy. Fiercely feminist and viscerally terrifying. -- Kirkus Reviews, starred Home alone with her young children during a blizzard, a mother tucks her son back into bed in the middle...