Loyal by Default: Legacy of Carter Reed by K.C. Mills

Carter Reed is an assassin with a heart that only beats for one person, McKenna Smith. In a perfect world she would be the light to his darkness. Carter’s world, however, is far from perfect. Which means McKenna cannot exist in it without a target on her back.
While he’s away, Carter’s enemies get close and McKenna’s life is threatened. In his quest to keep McKenna safe, Carter’s world expands with revelations from his past coming forth into the present. Soon he realizes time and place no longer matter because he’s the only person who can keep McKenna safe… and she’s the only one who can make him feel worthy.

If love is complicated, then theirs is an intricate web of complexity.