The most serious question that this book addressees is the concept of self identity.  This concept, knowing who you are is central to building healthy relationships and living a successful and fulfilling life. 

The main character experiences an identity crisis.  She is jolted into great confusion when she discovers that she was kidnapped as a young child.  Finding out where she came from, who her real family is and what happened to her and why, like that of many adopted children, becomes the major focus of her life.

"Janie is thrown into a state of emotional vacillation—one moment distrusting her parents then fiercely protecting and loving them, but all the time wondering about and wanting to make contact with her real family, the Springs, who live in New Jersey."