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.

Five-year-old Nathaniel is the only one who knows the identity of his assailant -- but in the initial fallout of his trauma, he's been left mute