Vendetta - Trinity City, #1

What would you do to protect a loved one? Nico Vigorito is no role model. He squandered his youth partying and scheming. Now he's forty, with nothing to show for those wasted years but a nasty drug habit, a waning conscience, and a volatile temper. After one particularly brutal outburst, his girlfriend Yvette kicks him to the curb. Unemployed and with nowhere else to turn, he moves in with his last remaining friend in the world.
But when the friend and his wife tire of "No-hope" Nico's freeloading, he cracks. He blames these two-faced friends for his misfortune. A cocktail of speed, resentment, and rage act as his catalyst, and drives him to make a snap-decision which has fatal consequences. When the smoke clears, police investigators charge an innocent man for murder, while Nico slips away and goes into hiding. Meanwhile, Yvette's brother and underboss of a local mafia family, Anton Finucci, learns the truth.
He fears Nico's revenge tour could include a stop at his sister's house, so the mafioso goes on a noble quest to flush out the murderous deadbeat. During the ensuing chase, both men become unhinged. One rampages in the name of survival, the other rages for justice. Only one thing is for certain. Both men will leave a trail of blood in their wake.