Barr, Nevada

A young woman from New York finds work as a ranger in the Guadalupe Mountains National Park in West Texas and soon discovers murder and violence on the high-country trails.

Park Ranger Anna Pigeon moves to Mississippi to accept a promotion, but she begins to think she has made a big mistake when the body of a young girl is found near an overgrown country cemetery, and her attempts to find answers are met with silence, hostility, and violence.

Park ranger Anna Pigeon, summoned to the side of a friend who was injured while exploring Lechugilla Cavern, learns that her mission is much more dangerous than she had imagined when Frieda, suffering from leg and head injuries, confides that someone tried to kill her.

Park Service ranger Anna Pigeon, on administrative leave after being diagnosed with post-traumatic stress disorder, hopes that a rafting trip in Big Bend National Park, planned by her husband of one year, will pull her out of her depression, but trouble finds her once again when the raft is lost in the rapids and one of the rafters discovers a pregnant woman, near death, caught in a tangle of downed branches.

Anna is lodged in Yosemite National Park's historic Ahwahnee Hotel when four employees disappear. Sensing evil, Anna hikes a snowy trail to the high country, only to discover a disturbing reality that may end her adventures once and for all.

Park ranger Anna Pigeon waits out her twenty-one day assignment on fire detail on Cumberland Island National Seashore. When a plane crash in the palmetto thicket calls her to action, she finds more than just the smoldering airplane.