In this mystery in Nevada Barr’s New York Times bestselling series, District Park Ranger Anna Pigeon is betrayed by nature itself, as a most unnatural evil stalks its prey in the pristine West…
Straddling the border between Montana and Canada lies the Waterton-Glacier International Peace Park—Anna’s home away from home when she is sent on a cross-training assignment to study grizzly bears. Along with...

Running from a proposal of marriage from Sheriff Paul Davidson, Anna Pigeon takes a post as a temporary supervisory ranger on remote Garden Key in Dry Tortugas National Park, a small grouping of tiny islands in a natural harbor seventy miles off Key West. This island paradise has secrets it would keep; not just in the present, but in shadows from its gritty past, when it served as a prison for the Lincoln conspirators during and after the Civil War. Here,...

It's fall in the Sierra Mountains, and Anna Pigeon is slinging hash in Yosemite National Park's historic Ahwahnee Hotel. Four young people, all seasonal park employees, have disappeared, and two weeks of work by crack search-and-rescue teams have failed to turn up a single clue; investigators are unsure as to whether the four went AWOL for reasons of their own-or died in the park. Needing an out-of-park ranger to work undercover, Anna is detailed...

Visiting an isolated Lake Superior isle to study wolf behavior, ranger Anna Pigeon joins a scientific group that subsequently discovers unusual DNA evidence suggesting that a giant and dangerous wolf hybrid has been introduced by an unknown source.

Recovering from the emotional scars of recent traumas, National Park Service ranger Anna Pigeon goes to stay with her friend, Geneva, in New Orleans, only to become the target of a dark curse, prompting her to investigate what is has to do with Geneva's creepy tenant and a fugitive mother accused of killed her family.

"Anna Pigeon, in her career as a National Park Service Ranger, has had to deal with all manner of crimes and misdemeanors, but cyber-bullying and stalking is a new one. The target is Elizabeth, the adopted teenage daughter of her friend Heath Jarrod. Elizabeth is driven to despair by the disgusting rumors spreading online and bullying texts. Until, one day, Heath finds her daughter Elizabeth in the midst of an unsuccessful suicide attempt. And then...