What did her son do in the woods last night? Does a mother really want to know?

It's what Sarah Ellsworth dreamed of. Marriage to her childhood sweetheart, Martin. Living in a historic mansion in Pennsylvania's most exclusive borough. And Finn, a teenage son with so much promise. Until...A call for help in the middle of the night leads Sarah and Martin to the woods, where they find Finn, injured, dazed, and weeping near his girlfriend's dead body. Convinced he's innocent, Sarah and Martin agree to protect their son at any cost and not report the crime.

But there are things Sarah finds hard to reconcile: a cover-up by Martin's family that's so unnervingly cold-blooded. Finn's lies to the authorities are too comfortable, too proficient, not to arouse her suspicions. Even the secrets of the old house she lives in seem to be connected to the incident. As each troubling event unfolds, Sarah must decide how far she'll go to save her perfect life.