As a Fish and Wildlife police officer, Luke McCain and his partner - a yellow Lab named Jack - spend their days patrolling the rivers, lakes, and forests of the wild and scenic Cascade Mountains in Eastern Washington. After hunters discover human remains inside a bear's stomach, McCain is thrust into the investigation. As more dead women are found in McCain's region, authorities suspect a serial killer is prowling the mountains he knows best. McCain will need his knowledge as an outdoorsman, and his instincts as an investigator, to track the psychopathic predator.

New owners of a dream cottage on a remote Maine lake find themselves taunted, then menaced by an unknown figure. When the local authorities refuse to help, they turn to retired Maine game warden Charley Stevens and his young protege Mike Bowditch for protection. But Charley begins to suspect there is more to the mystery than the couple is letting on—and if he and Mike don’t act fast, the situation will explode into violence.

When a teenager arrives at a Maine hospital with a rattlesnake bite, warden Mike Bowditch is baffled. Rattlesnakes have been extinct in the region for over a hundred years—so where did this one come from? Bowditch’s investigation leads him to a pair of eccentric scientists who have a vested interest in rattlesnakes and their venom. Even more suspicious, their estranged daughter has accused them of carrying out grotesque experiments on her. As more rattlesnakes appear in the woods—and the case becomes increasingly mystifying—Bowditch finds himself running out of time to catch his exotic foe.

Set in the wilds of Maine, this is an explosive tale of an estranged son thrust into the hunt for a murderous fugitive - his own father. Game warden Mike Bowditch returns home one evening to find an alarming voice from the past on his answering machine: his father, Jack, a hard-drinking womanizer who makes his living poaching illegal game. An even more frightening call comes the next morning from the police: They are searching for the man who killed a beloved local cop the night before - and his father is their prime suspect.

When Maine game warden Mike Bowditch discovers a bullet-ridden bald eagle in the Maine woods, he is surprised by the memories it brings back for his mentor, retired warden pilot Charley Stevens. Decades earlier, Charley briefly teamed up with Mike’s father, the notorious poacher Jack Bowditch, on an unsettling case that has haunted Charley for years. The two enemies, both war veterans, found common cause over the senseless shooting of a magnificent eagle. But what started as a tentative alliance over a wildlife crime soon became something bigger and more terrifying.

Danger lurks in the sleepy little town of Marathon, in the middle of the Florida Keys, as well as in the swamps of the Everglades. But danger doesn't expect to run into a man like Jesse. A man who will not only respond swiftly in facing it, but with a vengeance unexpected.

Rumors have swirled around Jake Cashen his whole life. Is he crazy like his father? Is it true they booted him out of the F.B.I. right after he cracked a career-making RICO case? Was he dirty? Only Jake knows, and he’s not telling. He came back to his tiny hometown at the foot of Ohio’s Blackhand Hills to serve as a deputy sheriff. He hopes to punch a clock and keep his head down until retirement. It was a solid plan—until someone put a bullet in the head of a revered county judge.

Where Jerry Snyder goes, trouble follows. Someone tried to kill him and his bride on their honeymoon in the Virgin Islands. And moving there permanently is proving to be anything but tranquil.

While studying wolverines on a wildlife sanctuary in Montana, biologist Alex Carter is run off the road and threatened by locals determined to force her off the land. Undeterred in her mission to help save this threatened species, Alex tracks wolverines on foot and by cameras positioned in remote regions of the preserve. But when she reviews the photos, she discovers disturbing images of an animal of a different kind: a severely injured man seemingly lost and wandering in the wilds.

After two tours as a sniper in Iraq, Tommy Smith has returned to his former life as a cowboy and wilderness guide in California’s Sierra Nevada, hoping to reclaim the simplicity of his youth and heal the wounds the world can’t see. When, high on a mountain pass, he and his partner find the wrecked plane of a billionaire adventurer who disappeared months earlier, a seemingly innocent act triggers a breathtaking cycle of violence that threatens Tommy’s world.

US Marshal Arliss Cutter is a born tracker. Raised in the swamplands of Florida, he honed his skills in the military, fought in the Middle East, and worked three field positions for Marshal Services. When it comes to tracking someone down - or taking someone out - Cutter's the best. But his newest assignment is taking him out of his comfort zone to southeast Alaska. Cold, dark, uninhabited forests that are often shrouded in fog. And it's the kind of case that makes his blood run cold.

Alexandra Collister came to her estranged cousins' B and B in Falls Lake, Alaska, looking for a fresh start. The surrounding forest can be harsh and unforgiving - luckily, rugged wilderness tracker Quinn Mantell offers to be her guide. Still recovering from a toxic previous relationship, Alex is wary of getting too close, but when savagely deep claw marks appear outside her bedroom window, keeping her distance from Quinn is no longer an option.

A lifeless girl slips into the river, cold and crumpled. Her body washes away with the rain. Her killer remains a mystery. Sheriff Elven Hallie has been longing for a new case that would add some excitement to his small-town life. But a dead girl wasn’t what he expected. On the last murder case he worked, he was just a deputy with an experienced Sheriff to guide him and they were looking for an outsider. This time, he’s in charge, and the killer is part of their community.

When a young girl is found dead in the mountains outside Timber Creek, lifelong resident Officer Mattie Cobb and her partner, K-9 police dog Robo, are assigned to the case that has rocked the small Colorado town. With the help of Cole Walker, a local veterinarian and single father, Mattie and Robo must track down the truth before it claims another victim. But the more Mattie investigates, the more she realizes how many secrets her town holds. And the key may be Cole's daughter, who knows more than she's saying.

As a decorated undercover DEA special agent, Garrett Kohl has traveled the world - and fought in most of it - but it’s the High Plains of northwest Texas he calls home and dreams of returning to one day. Kohl is in the middle of an assignment in Afghanistan when his commander orders him back to Texas on a short mission expected to take a week at most. But Kohl is unsettled to discover that he’s moving from one kind of war to another.