Brother In Arms (The Sacred Brotherhood #3)
A.J. Downey

Her daughter was in need of some kind of white knight, which Rush could care less about, but the white knight routine did come with a pretty big perk. It would mean that he got to go back to a job that had, once upon a time, felt like a calling.
Of course, nothing was ever easy where Rush was concerned, especially when he actually set eyes on the damsel in distress. One, she wasn’t some paper princess, and two, she definitely didn’t want him around. After all, one-night hook-ups were supposed to be just that… one and done.