In Jackson Square in the French Quarter a tarot card reader told Polly Deschamps she would be a success. Thirty years later, Polly is a respected professor of literature with good friends and her own home - a safe life for her and her two daughters. Butcher Boy, released on his 17th birthday, shook the snow from his boots and headed south. New Orleans, a Mecca for runaways then and now, offers sanctuary but never forgiveness.

Marooned on Cumberland Island National Seashore off the coast of Georgia, Anna finds time weighing heavily as she waits out a 21-day assignment on fire detail. When the sudden plane crash in the inland palmetto thickets calls her and the other members of the fire crew to action, the flames are quickly extinguished. But suspicions smolder over the cause of the accident which killed both the pilot and his passenger, Cumberland's lone law enforcement ranger.

While vacationing in Big Bend National Park, Anna and her new husband find themselves sucked into a riptide of danger and intrigue that surges from the Mexican desert to the Texas governor's mansion.

The killings on Isle Royale have left Anna drained and haunted, her memories of her time with the wolf study group forever marred by the carnage on the island. Diagnosed with post-traumatic stress disorder, she is on administrative leave, per her superintendent's urging. Anna wonders if the leave might not be permanent, either by her own choice or that of the National Park Service.

When Sheriff Paul Davidson proposes marriage to Anna Pigeon, he doesn't get the reaction a man might hope for. Intrepid park ranger Anna runs all the way to the furthest scrape of American ground not found in Alaska or Hawaii. How's that for a no? Anna takes a new post as temporary supervisory ranger in Dry Tortugas National Park, 70 miles off Key West. Dry Tortugas is the site of the former prison for Lincoln conspirators during and after the Civil War.

In Liberty Falling, Anna leaves the rugged countryside of Colorado to face the concrete wilds of New York City. As soon as she hears her older sister is gravely ill, Anna rushes to the Big Apple to sit at her bedside. Between hospital visits, she relaxes at the park service quarters on Liberty Island and explores the crumbling ruins of Ellis Island where thousands of immigrants once were processed.

It is January, and Park Ranger Anna Pigeon is sent to Isle Royale in Lake Superior to learn about managing and understanding wolves, as her home base of Rocky Mountain National Park might soon have its own pack of the magnificent, much-maligned animals. But what was once an idyllic refuge becomes a place of unnatural occurrences and danger beyond the ordinary.

It is January, and Park Ranger Anna Pigeon is sent to Isle Royale in Lake Superior to learn about managing and understanding wolves, as her home base of Rocky Mountain National Park might soon have its own pack of the magnificent, much-maligned animals. She's lodging in the island's bunkhouse with the famed wolf study team, along with two scientists from Homeland Security. Soon after Anna's arrival, the wolf packs under observation begin to behave in peculiar ways.

Anna Pigeon moves from Mississippi to Colorado to assume her new post as district ranger at Rocky Mountain National Park, where three girls have disappeared during a religious retreat. Two of the children reappear a month later, clad only in filthy underwear and claiming to remember nothing of the intervening weeks. As Anna investigates, she finds herself caught up in the machinations of a paranoid religious sect bent on protecting their secrets.

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.