They dubbed him the Collector, so named for his ritual of collecting victims before disposing of them in the most heinous ways possible. FBI Special Agent Maggie O'Dell spent two years tracking him down, caught in a game of cat and mouse that left her forever marked by this killer.

Meg and Hawk are part of the FBI's elite K-9 unit. Hawk can sniff out bodies anywhere - living or dead - whether it's tracking a criminal or finding a missing person. When a bomb rips apart a government building on the National Mall in Washington, D.C., it takes all of the team's extensive search-and-rescue training to locate and save the workers and visitors buried beneath the rubble.

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.

Caitlyn Reed and her dog, Renegade, are thrown into the midst of murder and intrigue when they discover a dead body while on a trail ride in the black hills of Wyoming. The local sheriff is hell-bent on a conviction, and Caitlyn’s brother, Dylan, is in his crosshairs. Desperate to prove his innocence, Caitlyn turns to Deputy Colt Branson for help, but she must grapple with their rocky romantic past to gain his aid. As Caitlyn and Renegade pursue the killer, the investigation catapults their lives in a dangerous new direction.

Mason "Mace" Reid lives on the outskirts of Chicago and specializes in human-remains detection. He trains dogs to hunt for the dead. Reid’s coming off a taxing year - mourning the death of a beloved springer spaniel as well as the dissolution of his marriage. He adopts a rescue dog with a mysterious past - a golden retriever named Vira. And when Reid begins training Vira as a cadaver dog, he comes to realize just how special the newest addition to his family truly is....

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.

Dive into the world of Maddie Castle, a retired K9 handler turned private investigator, in this heart-pounding collection of the first three novels in the bestselling series. From gripping mysteries to life-threatening pursuits, Maddie and her canine partners battle danger, corruption, and their own pasts to bring justice to those who need it most.

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.

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.

As England prepares to fight the Nazis, three very different women answer the call to mysterious country estate Bletchley Park, where the best minds in Britain train to break German military codes. Vivacious debutante Osla is the girl who has everything - beauty, wealth, and the dashing Prince Philip of Greece sending her roses - but she burns to prove herself as more than a society girl, and puts her fluent German to use as a translator of decoded enemy secrets.

On his thirty-sixth birthday, Travis Cornell hikes into the foothills of the Santa Ana Mountains. But his path is soon blocked by a bedraggled Golden Retriever who will let him go no further into the dark woods. That morning, Travis had been desperate to find some happiness in his lonely, seemingly cursed life. What he finds is a dog of alarming intelligence that soon leads him into a relentless storm of mankind’s darkest creation....

It should have been a routine investigation. Instead, DEA K-9 agent Adam "Deck" Decker watches in horror as one Denver hospital seems to be ground zero for overdoses of a new drug. Now Deck can only hope a certain ER doctor will help him and his canine partner track down the source. Dr. Tori Sampson has her reasons for not trusting federal agents, especially ones working for the DEA. But the rash of overdoses—including a heartbreaking case involving a teen—is alarmingly high. And the new opioid is not only extremely dangerous, it defies all the usual medical treatments.

Veronica Kildare cannot believe her luck–being shot at, again, by the bad guys. The sound, the feel of the bullet, and the hatred resonate for more than just the transitory moment of impact. She has relocated to a new state, but brutality has rampaged into this life as well.

This collection includes Chasing Justice, Hunting the Truth, and Killer Secrets.

Woody Bookman hasn’t spoken a word in his eleven years of life. Not when his father died in a freak accident. Not when his mother, Megan, tells him she loves him. For Megan, keeping her boy safe and happy is what matters. But Woody believes a monstrous evil was behind his father’s death and now threatens him and his mother. And he’s not alone in his thoughts. An ally unknown to him is listening.

Another witness had come forward, saying they were sure they had seen someone of Tom’s description near one of the old mine pit lakes. It was going on two years now since his disappearance, but of course, anything was possible. After all, while the clues had gone cold and witness memories faded, there was one thing that doesn’t die away, the scent of death. And that is where the dogs come in.

Call it a premonition. Call it intuition. Call it anything you like, but Pennsylvania State Trooper Jerry McNeal simply thinks of it as “that feeling.” That feeling may come on without warning, so intense he can’t breathe.

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.

Officer Luz is lucky she still has a job after tasering a male colleague where it counts the most. Sure, he had it coming - which is why the police chief is giving Megan a second chance. The catch? Her new partner can't carry a gun, can't drive a cruiser, and can't recite the Miranda Rights. Because her new partner is a big furry police dog. So that's what the chief meant when he called Megan's partner a real bitch...With Brigit out on the beat, Megan is writing up enough tickets to wallpaper the whole station.

After years of working the streets of Miami, veteran detective Jon Marzett craves a quieter life. Taking a job as sheriff in the sleepy town of Big Pine Key seems like the perfect place to wind down his career. But the town harbors dark secrets, and corruption festers deep below the surface of what seems like paradise. Jon soon finds himself thrust into a battle against a powerful cartel determined to maintain its grip on his new hometown.

Reed Montgomery would give anything to stop killing. A series of bad choices have led him into a life as an indentured assassin, where his bosses call the shots and he takes them—or else. Only the promise of eventual emancipation keeps him going, but in the criminal underworld, nothing is cheap. With one last kill standing between himself and freedom, Reed becomes involved with Banks, a young singer in the city. Suddenly, nothing is simple. Completing the kill will cost him everything with her, but Reed's bosses aren't interested in love, and they don't tolerate failure.

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 a fellow FBI agent is kidnapped and a protected witness vanishes, Leo Gallagher will stop at nothing to find them both. So when he discovers a link between the case and a single mother in Wyoming, Leo and his trusty K-9 partner rush to question Alicia Duncan. Could she be the key to locating the missing persons?

Meet Laci Jollett, a seasoned detective frustrated by the lack of a qualified partner. When her supervisor assigns her to K9 Suii—short for Suicide—Laci finds herself navigating an unfamiliar set of rules and a partnership unlike any she’s known. Determined to get back to working with a human partner, she’s in for a surprise. As Laci digs deeper into Suii’s mysterious past, she uncovers secrets that transform their relationship. In the process, Suii teaches Laci the true meaning of loyalty, forging a bond she never expected. This heartwarming story of friendship and trust will ...

Lucy Champagne was sent to St. Cecilia’s after her movie-star mother was brutally attacked by her sleazy boyfriend, Ray Watkins. Lucy’s damning testimony landed Ray a 25-year sentence. But now, Ray is free. And he’s going to find Lucy and make her pay, no matter how far and how fast she runs....

Melanie Starks has never lived life by the rules. She and her 17-year-old son, Charlie, have been running one con job or another for as long as she can remember, justifying the petty crimes as the necessary survival moves of a single mother. But Melanie is ready to give it up.

Caitlyn Reed and her dog, Renegade, are thrown into the midst of murder and intrigue when they discover a dead body while on a trail ride in the black hills of Wyoming. The local sheriff is hell-bent on a conviction, and Caitlyn’s brother, Dylan, is in his crosshairs. Desperate to prove his innocence, Caitlyn turns to Deputy Colt Branson for help, but she must grapple with their rocky romantic past to gain his aid. As Caitlyn and Renegade pursue the killer, the investigation catapults their lives in a dangerous new direction.

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.

LAPD cop Scott James is not doing so well, not since a shocking nighttime assault by unidentified men killed his partner, Stephanie, nearly killed him, and left him enraged, ashamed, and ready to explode. He is unfit for duty - until he meets his new partner. Maggie is not doing so well, either. The German shepherd survived three tours in Iraq and Afghanistan sniffing explosives before she lost her handler to an IED and sniper attack, and her PTSD is as bad as Scott’s. They are each other’s last chance.

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.