No electricity, no family, no connection to the outside world. For eight years, Cooper and his young daughter, Finch, have lived in isolation in a remote cabin in the northern Appalachian woods. And that's exactly the way Cooper wants it, because he's got a lot to hide. Finch has been raised on the books filling the cabin’s shelves and the beautiful but brutal code of life in the wilderness. But she’s starting to push back against the sheltered life Cooper has created for her - and he’s still haunted by the painful truth of what it took to get them there.

Since the dark events that scarred her childhood, Kier Templer escaped her hometown and her twin to live her life on the road. The siblings have never lost contact until, on a trip to a Portuguese national park, Kier vanishes without a trace. Detective Elin Warner arrives in the same park ready to immerse herself in its vast wilderness–only to hear about Kier’s disappearance, and discover a disturbing map she left behind. The few strangers at an isolated campsite close ranks against Elin’s questions, and the park’s wild beauty starts to turn sinister.

As a park ranger with the National Park Service's law enforcement team, Andrea Lankford led search and rescue missions in some of the most beautiful (and dangerous) landscapes across America, from Yosemite to the Grand Canyon. But though she had the support of the agency, Andrea grew frustrated with the service's bureaucratic idiosyncrasies, and left the force after twelve years. Two decades later, however, she stumbles across a mystery that pulls her right back where she left off: three young men have vanished from the Pacific Crest Trail.

Rare-book dealer Ashlyn Greer’s affinity for books extends beyond the intoxicating scent of old paper, ink, and leather. She can feel the echoes of the books’ previous owners—an emotional fingerprint only she can read. When Ashlyn discovers a pair of beautifully bound volumes that appear to have never been published, her gift quickly becomes an obsession. Not only is each inscribed with a startling incrimination, but the authors, Hemi and Belle, tell conflicting sides of a tragic romance.

Abigail Baskin never thought she'd fall in love with a millionaire. Then she met Bruce Lamb. He's a good guy, stable, level-headed, kind—a refreshing twist from her previous relationships. But right before the wedding, Abigail has a moment of uncertainty. The drunken one-night stand from her bachelorette weekend, the sexy guy who wouldn't give her his real name, didn't really mean anything, she keeps telling herself. She puts the incident out of her mind. Then the mysterious stranger suddenly appears—and Abigail's future life and happiness are turned upside down.