Grace Reinhart Sachs is living the only life she ever wanted for herself, devoted to her husband, a pediatric oncologist at a major cancer hospital, their young son, Henry, and the patients she sees in her therapy practice. Grace is also the author of the forthcoming You Should Have Known , a book in which she castigates women for not valuing their intuition and calls upon them to pay attention to their first impressions of men.

But weeks before the book is published, a chasm opens in her own life: a violent death, a missing husband, and, in the place of a man Grace thought she knew, only a chain of terrible revelations. Left behind in the wake of a spreading and very public disaster, and horrified by the ways in which she has failed to heed her own advice, Grace must dismantle one life and create another for her child and herself.