Salvation in Darkness by Nicole Edwards

Heaven refers to them as Misplaced Halos.
Humans don’t even know they exist.
This faction of celestial warriors was sent here under the cover of darkness to protect humanity from Lucifer’s demons. In return for their servitude, these warriors expect only one thing: the love they were promised, what angels refer to as an amsouelot.

Never one to rely on luck or favor, Eclipse isn’t surprised when his first interaction with the female whose soul is destined for his results in death. However, he is caught off-guard when the pretty blonde who was held at gunpoint by a two-bit human turns out to be sassy and fearless and not at all bothered by the mess that was made in that alley.

Orianna McKay has spent the past six years scouring the US in search of her sister. She has put her entire life on hold, hoping to locate Amber and bring her home to their mother. What she doesn’t understand is how one failed lead after another continues to take her right back to Nowhere, Colorado. Then he appears. The handsome warrior who takes a bullet in an effort to save her. What she doesn’t realize is that warrior is an angel and nothing in her world is as it seems.

Eclipse’s mission is to protect Orianna from the demons who are out to lay claim to her soul. Somewhere along the way, that mission changes, priorities are shifted, and destinies are revealed. By the time the dust settles, Orianna and Eclipse will learn that salvation comes in many forms.