Animal magnetism, book 3: Rescue my Heart
Jill Shalvis2012

After a tragic stint in the National Guards, Adam Connelly returns to Idaho and to Belle Haven, the animal shelter he owns with his brothers. All Adam wants is to be alone. Then he opens the door to the past—the woman whose heart he once broke. Still gorgeous, still tough-as-nails, but this time, unusually vulnerable.
Holly learned the hard way to never depend on a man for anything. Now, of all men, it’s the last one she wants to see, and the only one she needs. Her father has gone missing in the Bitterroot Mountains and she could use someone with tracking skills to help find him.
For Holly and Adam, each with their ghosts, a trek this desperate, this unpredictable, and this intimate, will have its share of risks—including opening their hearts one more time.