Sarah and Adam Granatt had the perfect suburban life: a beautiful house, an adorable daughter, a baby on the way, and a once-in-a-lifetime love. They were the couple everyone envied until Adam died. In the wake of his death, Adam's secrets begin to emerge. The first comes out when a woman named Candace introduces herself to Sarah as Adam's mother. Adam had always said his mother was dead, so either Adam was lying to her, or this woman is not who she says she is. Candace proves that Adam was her son, but she admits that her relationship with her son was strained. But she's still Sarah's mother-in-law, and she's here to help. Struggling with finances after Adam's death, Sarah agrees to move in with Candace and to accept her help with her toddler and her pregnancy. Living in Adam's childhood home, Sarah begins to understand the life he had before they met - the life he buried along with his relationship with his mother. When Sarah notices Candace's strange obsession with her pregnancy, and the house begins to feel less like salvation and more like a cage, she realises that Candace might not be the caring mother-in-law she seems. Maybe Adam had good reason to pretend that his mother was dead.