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.

Meg Russo was behind the wheel when it happened. She and her husband Justin were driving their daughter Lily to Ithaca College, the family celebrating the eighteen-year-old music prodigy’s future. Then a car swerved up beside them, the young men inside it behaving bizarrely—and Meg lost control of her own vehicle. The family road trip turned into a tragedy. Justin didn’t survive the accident.

When single mom Jo Dykstra was at her lowest—jobless and penniless—her childhood friend Dana McFarlane helped her out big-time by securing her a teaching job and thus an opportunity for a new life in the affluent Pacific Northwest town of Glebes Bay. So, when Jo gets a frantic late-night call from Dana, sobbing and desperate for help, it feels like a chance to help her friend in return.

When you return from a work trip to find your husband dead in the pond, it’s best not to call him a liar and a cheat in front of the cops. Especially when you’ve spent the last few years telling anyone who’ll listen that you sometimes fantasize about killing him. It makes you look kind of, well, guilty.

In the glow of their children’s exciting first year of college at a small private school in Northern California, five families plan on a night of dinner and cocktails for the opening festivities of Parents Weekend. As the parents stay out way past their bedtimes, their kids—five residents of Campisi Hall—never show up at dinner.