A grandmother in her sixties emerges from a mental fog to find she's trapped in her worst nightmare. Rose Dennis wakes up in a hospital gown, her brain in a fog, only to discover that she's been committed to an Alzheimer's Unit in a nursing home. With no memory of how she ended up in this position, Rose is sure that something is very wrong. When she overhears one of the administrators saying about her that she's "not making it through the week," Rose...

Hoping the adventure of a raft trip in Big Bend National Park will lift her spirits, Paul takes Anna to southwest Texas. Instead of the soul-soothing experience they'd longed for, the couple finds a pregnant woman--more dead than alive--and soon they are sucked into a labyrinth of intrigue that leads from the Mexican desert to the steps of the Governor's Mansion in Austin.

Anna Pigeon takes a job as a park ranger looking for peace in the wilderness-but finds murder instead. When a fellow ranger is killed and his death is ruled a mountain lion attack, Anna's suspicions are raised. It's up to her to save the protected cats from the prejudiced locals--and prove the kill was the work of a species far less rare.

When four young employees of Yosemite National Park disappear, ranger Anna Pigeon goes undercover as a waitress at the Ahwahnee Lodge to investigate. Living in the staff dorm, she soon discovers there's a connection between at least one of the missing girls, a crashed plane containing a fortune in drugs, and the outsiders who've moved into the tent cabin last occupied by a skilled climber who's also among the disappeared. The first attempt on her...

Anna Pigeon, a National Park Service ranger on administrative leave after a traumatic ordeal, stays with a friend, Geneva, in New Orleans, and when she encounters a strange man named Jordan and finds herself the target of a curse, she is forced to use her outdoors skills to help save herself and others in the urban setting.

Park ranger Anna Pigeon is sent to Isle Royal National Park, a remote island off the coast of Michigan. She finds herself in the lake searching for a connection between a drowned man and a sunken cargo ship.

Taking a temporary post as ranger in Dry Tortugas National Park to escape dealing with a marriage proposal, Anna Pigeon investigates a mysterious boating accident that leads her to uncover sinister local crimes from the past

It is whispered that the Old Ones still haunt Mesa Verde-the restless spirits of the Anasazi, who carved their homes in the mountain's face eight centuries ago ... and then disappeared from the Earth. Newly assigned national parks ranger Anna Pigeon seeks solace from her own personal demons in the ancient cave dwellings of a vanished Native American civilization. But an inexplicable illness affecting visitors to the popular Colorado landmark has dragged...

Anna Pigeon leaves the rugged countryside of Colorado to face the concrete wilds of New York City. Anna is in Manhattan to look after her sister Molly, seriously ill with pneumonia and a kidney infection. Pigeon moves in with a ranger friend who has a place on Ellis Island.

Soon after Anna Pigeon joins the famed wolf study team of Isle Royale National Park in the middle of Lake Superior, the packs begin to behave in peculiar ways. Giant wolf prints are found, and Anna spies the form of a freat wolf from a surveillance plane. When a female member of the team is savaged, Anna is convinced they are being stalked, and what was once a beautiful, idyllic refuge becomes a place of unnatural occurrences and danger beyond the...