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.

Separated from friends and family and haunted by personal demons, park ranger Anna Pigeon finds solace in the quiet ruins of the Anasazi civilization of Colorado's Mesa Verde. But the rugged beauty of the park and the mystery of the Anasazi are cruelly overshadowed by danger and death. Lately, visitors to Mesa Verde have been bringing home more than photos... they're also carrying a strange - and deadly - disease. In order to prevent more deaths,...

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...

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....

When Park Ranger Anna Pigeon answers a call to historic Mt. Locust, once a producing plantation and inn on Mississippi's Natchez Trace Parkway, the last thing she expects to encounter is a naked and very dead man. His body bears what looks like the brutal scars from an S&M ritual gone terribly wrong. When the deceased turned out to be the brother of a candidate for the office of local sheriff, a host of cover-ups, hidden agendas, old allegiances and...

Fleeing New York to find refuge as a ranger in the remote backcountry of West Texas, Anna Pigeon stumbles into a web of violence and murder when fellow park ranger Sheila Drury is mysteriously killed and another ranger vanishes.

Testing outdoor sporting equipment designed for a disabled companion, U.S. Park Services ranger Anna Pigeon returns from a solo outing to discover that her fellow campers have been abducted.

On an island on Lake Superior, Anna Pigeon, a National Park Service ranger, investigates the death of a diving instructor whose body was found in an old shipwreck.

"In The Rope, the latest in Nevada Barr's bestselling novels featuring Anna Pigeon, Nevada Barr gathers together the many strings of Anna's past and finally reveals the story that her many fans have been long asking for. In 1995 and 35 years old, fresh off the bus from New York City and nursing a broken heart, Anna Pigeon takes a decidedly unglamorous job as a seasonal employee of the Glen Canyon National Recreational Area. On her day off, Anna goes...

The sole survivor of a plane crash, seventy-two-year-old Cloris Waldrip finds herself lost and alone in the unforgiving wilderness of Montana's rugged Bitterroot Range, exposed to the elements with no tools beyond her wits and ingenuity. Intertwined with her story is Debra Lewis, a park ranger struggling with addiction, a recent divorce, and a new mission: to find and rescue Cloris. As Cloris wanders mountain forests and valleys, subsisting on whatever...