After years of assuming FBI Agent Emily Byrne was a possible victim of serial killer Conrad Harlow, she is miraculously returned to her family. Emily, however, has to struggle with the mysteries of her captivity and the fact that everyone has moved on without her. Investigating Emily’s disappearance, her husband Nick Durand detects a connection between Emily and a sex trafficker Robert Semerov, who has negative feelings about Emily. When the FBI traces the sex trafficker, suspicion suddenly moves to Emily. Is she still the same person they knew?

Tommy makes a new discovery that puts a new light on the investigation. Emily's past faces the present when she finally meets her captor, and will be like the mouse and the cat. When Nick gets hurt, Emily has to face several situations to save the ones she wants.