"His Daughter's Island," by Brendan DuBois, in Ellery Queen's Mystery Magazine, July 2012.
Very nice piece opens the new issue of EQMM. Zach Ford is a mild-mannered accountant in a small town in Maine. His beloved daughter goes off to a party at the home of a millionaire and dies. The millionaire's son is whisked out of the country, far from the possibility of justice.
In some stories the next step would be a whole lot of guns and blood, but Mr. Ford has a different idea. He studies up on the millionaire, and then he studies the state and local ordinances. And starts plotting a completely legal vengeance.
DuBois' story reminds me of one of my all-time favorites, "Privilege," by Frederick Forsyth. Both are about a "little man" who uses lateral thinking to go after a foe who seems to powerful to attack. Good piece.