While on a mission to bring his sister's killer to justice, bounty hunter Riley Martelli spots a missing FBI agent in a Colorado national park. When he calls in the tip, he's joined in his search by Special Agent Harper Prentiss. Harper, aided by her faithful German shepherd, is determined to locate the missing agent...without falling for the charms of the handsome bounty hunter. Working together is the best option to find their targets, but it also doubles the danger they're in.

When the Red Rose Killer leaves his calling card for Staff Sergeant Felicity Monroe, she knows exactly what that means-she's on his revenge list. Her boss, Master Sergeant Westley James, and K-9 German shepherd Dakota become her guardians, but they'll have to act fast to escape the man who wants her dead. 

Back home after a mission trip, nurse and EMT Sara Southerland learns that her cousin’s death might not have been an accident - and now someone wants her dead. The only person she can trust is longtime crush and fire captain Adam Kane. With a stalker on their tail, Adam will do whatever it takes to protect the woman he’s realizing he can’t live without. 

Luke Michaels' relaxing camping trip ends when he witnesses a woman being thrown from a bridge. He dives into the river to save her, shocked to find her wrapped in chains. As a canine search and rescue volunteer, Luke has assisted many victims, but never a beauty whose defeated gaze ignites his primal urge to protect. When Megan Witherspoon's killers make it clear they won't stop, Luke fights to save her, but can he keep her alive long enough to find out who is after her? 

When teenage sisters go missing in the mysterious "Bennington Triangle" of Vermont, an area renowned for its disappearances and strange occurrences over the past 100 years, FBI agent Jack Juarez brings K-9 handler Jamie Flint and her dog Phantom in to assist with the search. When Jack realizes the case shares haunting similarities with the murders of the missing girls' aunts 10 years before, it becomes clear that he and Jamie are dealing with much more than two girls who simply wandered off the beaten path.

While hiking in the foothills of the Rocky Mountains, FBI Special Agent Kendra Dean and her K9 partner, Baxter, stumble upon a dead body stashed in the woods. The discovery changes both of their lives forever. Special Agent Rick Sanchez hunts a serial murderer who is targeting women on a multi-state killing spree. Kendra Dean, an agent Rick met on a joint mission six months ago, has found the most recent victim. Rick and Kendra once shared a tempting chemistry but time and miles made their spark a distant memory.

It’s tough working nights with the NYPD. The crime rate is high, the hours are terrible, and forget about a personal life. So, when Officer O’Reilly and her K-9 Rolf switch over to the day shift, things look up. She’s even able to find time for a new boyfriend. But when the theft of a priceless painting from the Queens Museum leaves a fellow police officer dead, Erin and her four-legged partner find themselves dealing with dangerous criminals, sleazy art dealers, and obstructive detectives in a race to capture the killers...and just maybe bring closure to a 75-year-old crime.

Aggie Malone is a dedicated young cop who has spent her entire life just looking for a place to call home. She never thought she'd find it in a quaint Florida village called Dogleg Island, where almost nothing ever happens. Deputy Ryan Grady is an easygoing playboy who carries a surf board in the trunk of his patrol car and lives in the same rambling beach cottage his grandfather built 70 years ago. He grew up on Dogleg Island and can't imagine ever living anywhere else. It's always been the most peaceful place he has ever known.

Crack CIA analyst Trista Gold is a whiz with the computer, but not so much with people. She hides behind her job, analyzing top-secret code and making recommendations on national security. CIA K-9 officer Sgt. Matt Connors suspects that beneath Trista's uptight appearance, there's a sexy woman itching to cut loose. But he doesn't dare act on his attraction. He's a loner and always will be. Keeping away from Trista is a must-do directive. Until he doesn't have a choice. During a routine assignment, Trista stumbles across a cryptic exchange. Then someone tries to murder her - twice.

Grieving the death of his partner, Theo Bosco has no room in his life for distractions. Though his instincts scream that he should avoid Juliet "Jules" Jackson, he can't seem to stay away. When Jules rescued her siblings, whisking them away to the safety of the beautifully rugged Colorado Rockies, she never expected to catch the eye - or the heart - of a cop. Yet as Jules struggles to fight her growing attraction to the brooding K9 officer, another threat lurks much closer to home. And this time, there's no escape.

Officer James Cannon is one tall, strong alpha male who's convinced that Shay stole his dog. But once he gets closer to the suspect, he realizes that this stubborn, independent woman not only needs a guard dog, she needs James as well. It seems that someone from her past is stalking her, and threatening her life. When danger meets desire, will James risk his career and his best friend - to protect the woman who's stolen his heart?

After a tragic loss, Jessica Chamberlain changes jobs, moves, and adopts a rowdy German shepherd. The two begin training with a Virginia search-and-rescue group. The group's training director, Nathan Tanner, is a former military working dog handler with scars of his own and he quickly picks up on Jess's ongoing anxiety. After the unexpected discovery of a body in the woods, Jess and her dog and Nate are drawn into the FBI's search for an abductor targeting women. Tormented by her past and terrified of the future, Jess still forges ahead. 

As a native of the small town of Hansonville, North Carolina,and a wilderness rescue worker, Raine Stockton knows the Smoky Mountains as well as anyone could, but she gave up her Search and Rescue work after a tragic loss. Now she reluctantly returns to active duty to help find a young child who has been kidnapped and taken deep into the forest.

After their last deployment, when she got shot, her fiancé, Martinez, got killed, and his bomb-sniffing dog, Elvis, got depressed, soldier Mercy Carr and Elvis were both sent home, her late lover’s last words ringing in her ears: “Take care of my partner.” On the Fourth of July weekend, when all of Northshire celebrates with fun and frolic and fireworks, the dog alerts to explosives and they find a squalling baby abandoned near a shallow grave filled with what appear to be human bones. 

He was suspect number one - the man who tried to kill Deputy Mattie Cobb and may have killed her father 30 years earlier. But when Mattie and cold-case Detective Jim Hauck reach the Colorado state prison where they will finally get to interview him, he's found dead in his cell. There's only one clue: a map leading to Timber Creek and rugged Redstone Ridge. Following the clue, Mattie and her K-9 partner, Robo, journey into the burned forest surrounding Redstone Ridge.