This doubt gnaws at him until he seizes an opportunity to have their blood tested and his horrible fears confirmed. Furious, confused, and hurt, he lashes out at his ex-wife. She retaliates by refusing to let him see Sam, and by telling the boy that his beloved father is really no such thing. Peter sues for the return of years of generous child support payments. In the ensuing courtroom battle, he is forced to confront whether he can still be a father to a boy who has no biological or legal connection to him.