Serena's career as a high school biology teacher comes to a halt when an angry student makes shocking accusations. Stunned and suspended, Serena retreats to the forest where she usually finds peace of mind. But on this day she encounters a killer and his prisoner-as well as a stranger who dies to save Serena's life.The stranger, Christopher, had dedicated his life to rescuing girls from forced prostitution-starting with his sister Amber. They formed a tiny nonprofit organization to protect girls and have been working furiously to bring down John Roman, the powerful criminal who first took Amber and has ruined scores of young women's lives since.When Christopher's grieving colleagues suspect Serena of being in league with Roman, her life spirals further out of control. How will she clear her name Why did this stranger protect her with his life And what is the meaning of the visions she sees every time she visits the gutted house where he died