turns into a deadly alpine chase...

Undercover to track the assassin who killed his partner, FBI special agent Alex Driscoll accidentally pulls his partner's widow, Violet Sharp, and her search-and-rescue K-9, Teddy, into the case. Now, with Violet's life on the line, the only way Alex can protect her is to make her--and her enormous dog--his new cover. But can they stay alive long enough to bring the hit man to justice?

From Love Inspired Suspense: Courage. Danger. Faith.

K-9 Search and Rescue

Book 1: Desert Rescue by Lisa Phillips
Book 2: Trailing a Killer by Carol J. Post
Book 3: Mountain Survival by Christy Barritt
Book 4: Search and Defend by Heather Woodhaven
Book 5: Following the Trail by Lynette Eason
Book 6: Dangerous Mountain Rescue by Christy Barritt