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.

Park Ranger Anna Pigeon returns to face her most duplicitous foe—human nature—in Nevada Barr's New York Times bestseller, Hunting Season.

 

The quiet beauty of autumn on Mississippi’s Natchez Trace is swiftly shattered when Anna answers a call to Mt. Locust, once a working plantation and inn, now a tourist spot. But the man Anna finds in an old bedroom is no tourist in distress. He’s nearly naked,

...

Just days after marrying Sheriff Paul Davidson, Anna Pigeon moves to Colorado to assume her new post as district ranger at Rocky Mountain National Park.
When two of three children who'd gone missing from a religious retreat reappear, Anna's investigation brings her face-to-face with a paranoid sect—and with a villain so evil, he'll make the hairs on the back of your neck stand on end.

"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...

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.

Park ranger Anna Pigeon investigates a suspicious plane crash in which a fellow ranger and his pilot died. The pair were on an anti-narcotics patrol in an island park off Georgia. By the author of Firestorm.

"Clay Stevens desperately wants to reclaim his grandfather's land, using the latest techniques to bring water to the arid landscape. The last thing he needs is wild wolves on his ranch--even if they are brought there by feisty and determined conservation officer Lacey Montgomery. Lacey is convinced the ranchers and the lobos can co-exist, until Clay's nephew and his friends cause a landslide that injures some rare Mexican wolf pups and Lacey gets...

"When ISB Ranger Madison Thorn arrives in Natchez to investigate a white-collar scheme, she has no idea she will be thrown back into the violent crimes division--or that it will get so personal. She'll have to work with her childhood-enemy-turned-handsome-charmer to unravel the clues before it's too late"--

"Former FBI partners Maggie Gaines and Vic Sutherland must work together to find a serial killer who targets hikers in national parks." --