Perfect match

"What does it mean to be a good mother?" For career-driven assistant district attorney Nina Frost, the question inspires pangs of guilt familiar to all parents torn by the demands of home and office. But whereas most parents lie awake at night vividly conjuring the worst scenarios that could befall their children in their absence, Nina lives the reality of such crises -- and it's her job to do something about them. Nina Frost prosecutes child molesters -- and in the course of her everyday work, she has endured the frustration of seeing too many criminals slip through the system and walk free. A man as methodical and careful as his wife is instinctive and mercurial, Caleb Frost is a stonemason who glories in his ability to construct with his own hands the physical barriers that will keep out the unwanted -- and protect all that is precious within. But even the strongest walls cannot guard Nina and Caleb from the shattering discovery that their own beloved son has been sexually abused.