Bray by Maryann Jordan

His mission? A leisurely, first-class train ride through the Canadian Rockies escorting a doctor who was afraid of flying.

Easy. Relaxing. And if the doctor is a beautiful, funny, kind-hearted woman that makes him wish for a future he thought had been buried with his last Special Forces mission, what can go wrong?
Plenty.
Illegal weapons smuggler. Nefarious businessmen. An explosion that knocks the train off the tracks. An escape into the Canadian forest. And the doctor with a medical condition and not enough medication.
Bray will need to use all his skills and help from fellow Keepers to turn this mission gone wrong into a success… after all, both their lives, and their hearts depend on it.