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? As more secrets surface, a fog of doubt and suspicion threatens to poison their families, their friendships, and the whole community.

With the illusion of happiness and safety long gone, these women must now confront the hazards of heartbreak, the consequences of jealousy, and the dangers of living double lives.