Sometimes the darkest acts occur in the most beautiful houses...

When Alexis and her husband Sam buy a neglected Cape Cod house in an exclusive DC suburb, they are ecstatic. Sam is on the cusp of making partner at his law firm, Alexis is pregnant with their second child, and their glamorous neighbors welcome the couple with open arms. Things are looking up, and Alexis believes she can finally leave her troubled past behind.

But the neighborhood's picture-perfect image is shattered when their neighbor Teddy - a handsome, successful father of three - is found dead on the steep banks of the Potomac River. The community is shaken, and as the police struggle to identify and apprehend the killer, tension in the neighborhood mounts and long-buried secrets start to emerge.

In the midst of the turmoil, Alexis takes comfort in her budding friendship with Teddy's beautiful and charismatic widow, Blair. But as the women grow closer, the neighborhood only becomes more divided. And when the unthinkable truth behind Teddy's murder is finally uncovered, both Blair and Alexis must reexamine their friendship and decide how far they are willing to go to preserve the lives they have so carefully constructed.