Twisted Pawn (Society of Villains Series, Book 2)

She broke his heart. Now it's time he destroys her.

Tierney:

There's a bullet with my name on it. And Achilles Ferrante is the man who'll pull the trigger. I'd always known one of us would kill the other. I'd just hoped to do the honor. Twice I betrayed him. First, I broke his heart. Then, I sold him out to the Feds. Even if I hadn't, I doubt he could spell mercy, much less spare me any. The Camorra prince promised he'd make a spectacle of my death when he caught me. Let him try. He could chase me until the end of Earth. I will always run faster.

Achilles:

To love is to destroy, and I'd loved Tierney Callaghan far too long, and far too much. She's a fatal weakness, but unlike the Greek mythology warrior - I will remain undefeated. My little flame can run fast, but my bullet is faster. Once upon a time, she was the only person who saw my humanity. She's about to meet the monster everyone else knows.