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.

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.

Embarking on a guided rafting trip with her husband, Paul, in Big Bend National Park on the Texas-Mexico border, Anna Pigeon is drawn into dangerous intrigue when one of their companions on the trip discovers a pregnant woman caught among tangled branches in the river.

Assuming a new post as district ranger at Rocky Mountain National Park in the wake of the disappearances of three young girls, Anna Pigeon is astonished when two of the girls emerge a month later with no memory of their experiences.

Recovering from recent emotional trauma, National Park Service ranger Anna Pigeon goes to New Orleans to visit her friend, Geneva, only to become the target of a dark curse, prompting her to investigate what it has to do with a fugitive mother accused of killing her family.

In New York Times bestselling author Nevada Barr's gripping standalone, a grandmother in her sixties emerges from a mental fog to find she's trapped in her worst nightmare Rose Dennis wakes up in a hospital gown, her brain in a fog, only to discover thatshe's been committed to an Alzheimer's Unit in a nursing home. With no memory of how she ended up in this position, Rose is sure that something is very wrong. When she overhears one of the administrators...