On Harlow Street, the well-to-do neighborhood couples and their children gather for a catered barbecue as the summer winds down. Drinks continue late into the night. Everything is fabulous until the picture-perfect hostess explodes in fury because her son disobeys her. Everyone at the party hears her exquisite veneer crack --- loud and clear. Before long, that same young boy falls from his bedside window in the middle of the night. And then, his mother can only sit by his hospital bed, where she refuses to speak to anyone, and his life hangs in the balance. What happens next, over the course of a tense three days, as each of these women grapple with what led to that terrible night?

Blythe Connor is determined that she will be the warm, comforting mother to her new baby, Violet, that she herself never had. But in the thick of motherhood’s exhausting early days, Blythe becomes convinced that something is wrong with her daughter --- she doesn’t behave like most children do. Or is it all in Blythe’s head? Her husband, Fox, says she’s imagining things. The more Fox dismisses her fears, the more Blythe begins to question her own sanity, and the more we begin to question what Blythe is telling us about her life as well. Then their son, Sam, is born --- and with him, Blythe has the blissful connection she’d always imagined with her child. Even Violet seems to love her little brother. But when life as they know it is changed in an instant, the devastating fallout forces Blythe to face the truth.