How far would you go for revenge? If you were given a chance at deadly retribution with a guarantee that the law could not touch you-in the form of a special briefcase containing an untraceable gun and 100 rounds of ammunition-would you take it? To the damaged and downtrodden, the offer is a once-in-a-lifetime chance to even their scores. But beyond the dilemma of whether to pull the trigger lies a deeper and even more troubling concern: just who...