Aftershock. A Thriller

The idyllic facade of a small coastal tourist magnet hides its secrets well. But when the shining star pitcher of the girls' softball team guns down the most popular boy in school, the shockwaves reverberate far beyond the school's walls. In the wake of the killing, two of the town's newer residents turn over deeply embedded rocks, exposing a subculture of almost unimaginable horror lurking beneath. Formerly a nurse with Médecins Sans Frontières, Dolly has become a defender and confidante to dozens of local teenage girls, and she refuses to accept that MaryLou ("Mighty Mary") McCoy's gunning down Cameron Taft in a high school hallway is a typical school shooting.
Although MaryLou's guilt is not in doubt-it's even captured on the school's security camera-the girl insists on a trial .