Debbie Mullen is losing it. For years, she has compiled all of her best advice into her column, Dear Debbie, where the wives of New England come for sympathy and neighborly advice. Through her work, Debbie has heard from countless women who are ignored, belittled, or even abused by their husbands. And Debbie does her best to guide them in the right direction. Or at least, she did.

Best friends Lindsey, Kendra, and Dani endure every parent’s nightmare when a tragic accident befalls their teenage boys, leaving one dead, another in a coma, and a third too traumatized to speak. Reeling from the worst night of their lives, the three mothers plunge into a desperate investigation of the bizarre incident. How could something so horrible happen in their wealthy Southern California suburb? They soon discover that the accident was just the beginning, and troubling discoveries lead to chilling questions: Do they really know their children? Do they even know each other?

Therapist turned stay-at-home mom Jules Hart’s idyllic suburban life shatters when she crashes her car into an icy lake. Her son and another teenage boy plunge into the water with her, but Jules can only manage to save one—the wrong one. Reeling from the death of her son, Jules spirals into a violent and unstable mental state. Ten months after the accident, she’s still trying to reckon with the fact that she rescued Isaac Greer, another woman’s child, when Isaac suddenly vanishes.

It’s 5 November, and a woman awakens to a nightmare. Bound and gagged, she lies trapped in the heart of a towering bonfire. As the smoke thickens, panic sets in–she’s moments away from being engulfed in flames. How did it come to this? Rewind eleven months: Margot, a faded TV star, and her long-suffering friend Anna watch as glamorous Liv and her flawless family move into their street. The three women soon fabricate the perfect pretence of friendship, but each harbours her own deadly secret–and newcomer Liv senses something is terribly wrong beneath the polished exteriors.

Growing up abandoned by her father and raised by a single mother, Celeste was determined to create the perfect family - but even perfect families have secrets. Her days are filled with a rewarding career, a devoted husband, and her four-year-old daughter. Celeste is the only one who knows the precarious house of cards her family is built upon - until the day her daughter falls critically ill. Then her world quickly spirals out of control, her secret threatening to destroy her marriage, family, reputation, and sanity.