Neighbors Gwen, Aimee, and Lisa share more than playdates and coffee mornings on their tranquil street in East Bethesda. They confide their deepest secrets, navigate the challenges of motherhood together, and provide a support system that seems unbreakable. But when Gwen's husband is found murdered after one of their weekly Friday night dinners, the peaceful quiet of their cul-de-sac shatters. The seemingly idyllic world of the three close-knit mom friends becomes a web of deception, betrayal, and revenge.

Stay-at-home mom Eloise Williams is PTO president and a respected local philanthropist who sits on the boards of many distinguished charities. In addition to being a doting wife and mother, she is also a serial killer.

The moment I first gazed into Alex's soulful gray eyes, I knew I'd met the man I wanted to spend my life with. And I was right. When my beloved sister vanished, Alex put up posters and wiped away my tears after bad dream—she put me back together. But when police pull a crumpled photo from my dead sister's pocket, and I see my husband's familiar face smiling back at me, my perfect world shatters.

Sloane Caraway is a liar. Harmless lies, mostly, to make her self-proclaimed sad, little life a bit more interesting. So when Sloane sees a young girl in tears at a park one afternoon, she can't help herself—she tells the girl’s (very attractive) dad she’s a nurse and helps him pull a bee stinger from the girl’s foot. With this lie, and chance encounter, Sloane becomes the nanny for the wealthy, and privileged Jay and Violet Lockhart. The perfect New York couple, with a brownstone, a daughter in private school, and summers on Block Island.

After my first husband died, I thought my heart was completely broken, and that I’d never feel happy again. Until I met Theo. He’s a doctor. A man who seems good and caring and kind. Soon after we start dating, he says he wants to marry me. And even though his grown-up children are less sure about me, to everyone else it’s the second chance for love and happiness I deserve. But the truth is maybe his children are right to be suspicious. Because I know something about Theo. That he was there in the operating theatre the day my first husband died. And I think it was his fault.