When Marin’s five-year-old daughter is locked in a sweltering car, her husband Ryan ignores her desperate calls—too busy playing “daddy” to his mistress’s son. By the time Marin tears across the city to save her, Lily is barely breathing. Devastated and clear-eyed at last, Marin walks away from the marriage and rebuilds her life, only to find that the man who betrayed her—and the woman who stole him—are far from done with her.