Destroyer angel

US Park Ranger Anna Pigeon has just finished a summer spent fighting wildfire. Her next trip is a quieter one: a camping expedition to the Iron Range in upstate Minnesota with four women, among them Heath, who is paraplegic.

The outing doubles as a field test. Leah has designed a new line of outdoor equipment meant to make the wilderness easier for disabled campers to reach, and the group is there to try it out.

On the second night, Anna takes a canoe out on the Fox River. When she paddles back, the camp has been taken over by kidnappers carrying rifles, pistols and knives, and her companions are their hostages.

Anna has few supplies and no way to reach anyone outside. She must follow the captors across rough, dangerous country on her own and try to free the group before time runs out.

This is a suspense novel in the Anna Pigeon mode: a wilderness setting, a small cast of women, and a rescue that depends on one ranger's tracking and endurance.