100 Bullets: First Shot, Last Call - Brian Azzarello

I like a lot of Azzarello's work, but this first volume about a mysterious Agent Graves who gives victims information about criminals who did them wrong and an untraceable gun and bullets with which to get revenge just didn't thrill me. The stories deal with people's moral dilemmas over murder, but I can't help but get caught up in the idea that if Graves wants justice he could turn the evidence over to the law or simply kill these criminals himself. Cej tells me that the later stories explain more, but I'm not certain if I should bother with it.