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 having killed her family.

Anna and Sheriff Paul Davidson are married only three days before Anna moves from Mississippi to Colorado. Her mettle is immediately tested as the new district ranger at Rocky Mountain National Park. Three young girls have gone missing, and when only two return a month later-- wearing filthy undergarments and bearing deep psychological scars-- the signs point to a mysterious religious organization that guards its secrets closely. As a palpable sense...

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 disapeared, and two weeks of work by crack search and rescue teams have failed to turn up a clue.

When park ranger Anna Pigeon stumbles on the corpse of a girl with a noose around her neck, she is plunged into a murder investigation with serious racial overtones in the heart of the Deep South.

Park ranger Anna Pigeon investigates the crash of a drug-interdiction plane on an isolated Georgia island. Was it an accident or sabotage that downed the plane, killing both the pilot and his passenger? It's up to Anna and her crew to solve the mystery.

While park ranger Anna Pigeon is visiting the Statue of Liberty, a teenage girl jumps to her death. Or was she pushed? Officially the girl was being chased by a guard who thought she was a pickpocket.

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.

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 probes the murder of fellow ranger Stacey Meyers in Colorado's Mesa Verde National Park. Meyers was investigating the sabotage of equipment used in installing a water pipe through ancient Indian grounds. The construction is opposed by many people.