Trigger. Vigilante Justice, #1

Balancing the Scales by Force.A ruthless killer, a survivor, and a dysfunctional family running out of options. A shocking act of violence sends a young widow into hiding. Now, a killer with rules of his own has set his sights on those fighting for justice. Frustrated by the system they dedicated their lives to, doing their best to fly under the radar, a small group of unlikely heroes set out to stop a madman.
To succeed, they must put personal beliefs before professional ethics. Time is running out; a ruthless killer continues his reign of violence; rules must be broken. Can this secret group of vigilantes unearth the truth before it's too late? They didn't start this war, but they are the only ones that can finish it.