In the aftermath of Catherine's suicide, Detective John Cardinal outwardly accepts the evidence that she took her own life, but when he starts to receive taunting greeting cards blaming him for her death, he begins to question the suicide.
Anna Pigeon is a former city slicker who became a park ranger after a devastating loss changed the trajectory of her life forever. While Anna tries to outrun her demons, her focus turns to solving crimes that have taken place within national park grounds, no matter who or what gets in her way.
The series is based on the novels by Nevada Barr.
