Some horse stables are remote for a reason… Private investigator Nikki Drake thought she was following her vet’s orders by taking her K9 partner to an isolated log cabin deep in the wilds of California. But Gunner doesn’t understand he’s in rehab and his remarkable nose leads to a gruesome discovery. When both the local police and a powerful stable owner brush off her find, she does some digging of her own. Soon she is on the run, with both a terrified groom and a pricey racehorse in tow. The more she learns about the sinister owner, the faster she realizes there is more at stake ...

Belated justice can be the most satisfying. For almost ten years, Nikki Drake struggled to deal with her sister’s mysterious disappearance. When another teen vanishes from the same riding stable, the details are too eerily similar to ignore, and she vows to uncover the truth. No longer a child but a newly minted private investigator, she has additional weapons in her arsenal now, including a re-homed police dog and an enigmatic detective with ties to the horse stable. However, digging into her sister’s case erodes old trusts and brings dark secrets bubbling to the surface. And this time...

A frightened boy turns into a runaway murder witness, relying on only his bike and brains to evade the killers. When Ricky Lopez skips school and bikes out to his boss’s remote bungalow, he isn’t worrying about anything except collecting his pay. Cleaning portables isn’t a fun job, and he doesn’t intend to let anyone cheat him out of his hard-earned cash. But his life is upended when he witnesses a shocking murder and discovers the portables are used for trafficking illegal drugs. Worse, the killers know his name, and what he’s seen. Now he’s on the run and hiding in the San ...

Some lies are worth millions. Some truths are worth murder. When Nikki Drake and her K9 Gunner are hired to protect a rebellious racehorse, she expects routine surveillance and security work. Instead, she discovers a Derby contender whose biggest threat isn't his temperament but the powerful people determined to stop him from racing—by any means necessary. As threats escalate from intimidation to sabotage, Nikki uncovers a tangled web of secrets that extends far beyond stable politics. When a murder at the training center shatters any illusion of safety, she and Gunner find themselves ...

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.

DEA Agent Doug Bridges is angry to realize his stepsister has been kidnapped after her night shift at the hospital. He goes into full agent mode to investigate, but soon runs into dead ends. Winter in northern Wyoming is no joke and he needs help, fast. When he’s referred to the Sullivan K-9 Search and Rescue team, he convinces Maya Sullivan and her Siberian Husky Zion to help him find Emily.

K-9 officer Tarren McGregor never imagined that a cartel would find its way to Texas’s South Padre Island—or target his best friend’s sister. But when Julia Hamilton witnesses and prevents the kidnapping of a teen girl, Tarren knows that trouble is soon to follow. Because Julia didn’t just protect the girl—she saw the abductor’s face. Now she’s marked for murder, and it’s up to Tarren and his K-9 partner to keep Julia safe from the human traffickers in pursuit…even if it means putting themselves in the line of fire.

K-9 officer Jared Miles stumbles upon a crime scene on his day off and believes Kassie Ashbaugh is the victim of a random attack. However, as threats on her life continue, he realizes that Kassie is in grave danger. Her father's abandoned boat suggests foul play, and Jared suspects someone is after Kassie for something her missing father is hiding. Can Jared unravel the mystery before unknown enemies catch her?

Eden Mercer, a determined young officer in the fog-shrouded, tight-knit town of Nightfall, Oregon, is haunted by her past in a fundamentalist cult. With her loyal K-9 partner, Shadow, by her side, she’s eager to prove herself in a department dominated by machismo. When a couple stumbles upon a woman’s body in a ritualistic burial deep within the dense, misty forests, Eden is thrust into a chilling mystery. As she delves deeper, disturbing clues and unsettling secrets tied to a local cult emerge.

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.