When a deep-seated memory suddenly surfaces, Elizabeth Burns becomes obsessed with the long-ago disappearance of her childhood friend April Cassidy. Driven to investigate, Elizabeth discovers a thirty-five-year-old newspaper article revealing the details that had been hidden from her as a child—shocking revelations about April's mother, Adele.

Elizabeth, now herself a mother, seeks out anyone who might help piece together the final months, days, and hours of this troubled woman's life, but the answers yield only more questions. And those questions lead back to Elizabeth's own life: her own compromised marriage, her increasing self-doubt and dissatisfaction, and finally, a fearsome reckoning with what it means to be a wife and mother.