No good deeds
(Book)

For Tess Monaghan, the unsolved murder of a young federal prosecutor is nothing more than a theoretical problem, one of several cases to be deconstructed in her new gig as a consultant to the local newspaper. But then her boyfriend brings home a street kid who doesn't even realize he holds an important key to the man's death. Tess agrees to protect the boy's identity no matter what, especially when one of his friends is killed in an apparent case of mistaken identity. But with federal agents determined to learn the boy's name at any cost, Tess finds out just how far even official authorities will go to get what they want. Soon she's facing felony charges--and her boyfriend has gone into hiding with his protégé, so Tess can't deliver the kid to investigators even if she wants to.--From publisher description.