Kramer versus Kramer

In the beginning they were three. Joanna and Ted Kramer, and four-year-old Billy -- his big brown eyes bright with curiosity and wonder. A perfect family. Then on day the mother abandons them. Divorce. And now they are two. Father and son. Caring and cared for, learning what loving and belonging are all about, until there is a bond between them that nothing can break. Nothing and nobody -- except maybe a mother who, almost two years later, changes her mind and wants her little boy back. This book was made into a movie by the same title.