 Dorchester, one of the toughest neighborhoods in all of Boston, is no place for the weak or innocent. Its a territory defined by hard heads and even harder luck, its streets littered with broken families, hearts, dreams. When one of its own, a 4-year-old girl, goes missing, private investigators Patrick Kenzie and Angela Gennaro don t want the case. But after pleas from the child s aunt, they open an investigation that will ultimately risk everything -- their relationship, their sanity, and even their lives -- to find a little girl-lost.