Until Nox by Layla Frost

Not all heroes are good guys.
With a body count on his soul and blood on his hands, Killian Nox lived in the gray. Ruthlessly single-minded, if he wanted something, it was his. And when it came to the gorgeous lass with a fiery attitude, he didn’t just want her.
He needed her.
With southern-bred manners and a snark all her own, Augusta ‘Gus’ Allan was a connoisseur of cheap wine, delicious Mexican food, and good TV. Unfortunately, her taste in men wasn’t as well-developed. When her knight in shining armor turned out to be a douche in tinfoil, Gus never expected her real hero to be a sexy-accented, tattooed beast of a man.
But he was exactly who she needed.
Gus had no clue how comforting a monster in the dark could be…
Until Nox.