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.

Wounded in the line of duty, former K9 Handler Maddie Castle finds herself back to square one. The bullet that shredded her leg took the life of her four-legged partner. The pain of recovery goes well beyond the daily physical torment she endures.

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.

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.

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.

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 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.

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....

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.

After losing her military K-9, former marine Maya Thompson swears she’ll never work with dogs again. But when she returns home to Colorado and accepts a job with US Forest Service law enforcement, fate brings K-9 Juniper into her life just as another tragedy unfolds. Juniper, a beautiful two-year-old Malinois, isn’t the only new addition to Maya’s life. Josh Colten, the local deputy sheriff, insists on helping with her new case. Handsome and mysterious, he’s all anyone in town can talk about, but Maya can’t let herself like him, let alone trust him.

It's 1949. When war veteran Aloysius Archer is released from Carderock Prison, he is sent to Poca City on parole with a short list of dos and a much longer list of don'ts: do report regularly to his parole officer, don't go to bars, certainly don't drink alcohol, do get a job - and don't ever associate with loose women. The small town quickly proves more complicated and dangerous than Archer's years serving in the war or his time in jail.

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....

Thirty years ago, Wilde was found as a boy living feral in the woods, with no memory of his past. Now an adult, he still doesn't know where he comes from, and another child has gone missing. No one seems to take Naomi Pine's disappearance seriously, not even her father - with one exception. Hester Crimstein, a television criminal attorney, knows through her grandson that Naomi was relentlessly bullied at school. Hester asks Wilde - with whom she shares a tragic connection - to use his unique skills to help find Naomi.

Ellery Hathaway knows a thing or two about serial killers, but not through her police training. She's an officer in sleepy Woodbury, Massachusetts, where a bicycle theft still makes the newspapers. No one there knows she was once victim number 17 in the grisly story of serial killer Francis Michael Coben. The only victim who lived. When three people disappear from her town in three years, all around her birthday - the day she was kidnapped so long ago - Ellery fears someone knows her secret. Someone very dangerous.

As a child, dog-loving Brenna Fallon naively invokes an ancient Celtic deity to save her beloved hound - and inadvertently anchors the new-found power at a spring on her family's farm. She doesn't know she's also left an opening for a far more malevolent force. Years later, thanks to the actions of several angry young men, Brenna discovers the terrible potential of that gateway.

Among the Irish Travellers living in the Appalachian Mountains of Tennessee, no one forgets and no one forgives. And as former Marine MP Brynn Callahan finds out when she returns home, it's hard to bury the past when bodies keep turning up....

After losing her military K-9, former marine Maya Thompson swears she’ll never work with dogs again. But when she returns home to Colorado and accepts a job with US Forest Service law enforcement, fate brings K-9 Juniper into her life just as another tragedy unfolds. Juniper, a beautiful two-year-old Malinois, isn’t the only new addition to Maya’s life. Josh Colten, the local deputy sheriff, insists on helping with her new case. Handsome and mysterious, he’s all anyone in town can talk about, but Maya can’t let herself like him, let alone trust him.

As a sniper with the elite Massachusetts State Police SWAT Team, Bobby Dodge saved a woman and her young son by shooting her armed husband. But vicious rumors begin to circulate the next morning when Bobby loses his gun and his privileges. It turns out the dead man was the son of a prominent Boston judge and had accused his wife of poisoning their son.

Anthony Award-winning author William Kent Krueger crafts this riveting tale about a small Minnesota town’s ex-sheriff who is having trouble retiring his badge. Cork O’Connor loses his job after being blamed for a tragedy on the local Anishinaabe Indian reservation. But he must set aside his personal demons when a young boy goes missing on the same day a judge commits suicide—and no one but O’Connor suspects foul play.

Reeve LeClaire is a college student, dammit, not Daryl Wayne Flint's victim. Not anymore-not when Reeve is finally recovering a life of her own after four years of captivity. Flint is safely locked up in Olshaker Psychiatric Hospital, where he belongs. He is walking the grounds of the forensic unit, performing his strange but apparently harmless rituals. It seems that he is still suffering the effects of the head injury he suffered in the car crash that freed Reeve seven years ago. Post-concussive syndrome, they call it.

When Liv Dugan ducks out of work for lunch, it's just an ordinary day. When she returns, she stumbles onto a massacre. All her colleagues at Zuma Software have been shot. Only luck has left Liv unscathed, and that might be running out....

FBI analyst Kassidy Bishop is assigned to the "'For You' Killer" task force after a series of sadistic murders bearing the same signature arise in different parts of the country. The homicides are both calculated and savage, occurring in different states, but bearing the same signature: the words "for you" scribbled at each crime scene. The case chills Kassidy, bringing back memories of her own encounter with a violent criminal five years earlier.

There's nothing strange about bodies buried in cemeteries - unless they don't belong there. And when six murdered women are discovered in other people's graves, the hunt for a sadistic serial killer begins before he can claim a seventh victim. Agent Cam Prescott of Iowa's Division of Criminal Investigation is leading the search alongside forensic psychologist Sophia Channing, who knows the minds of psychopaths inside and out. And after a brief but passionate affair, she knows Cam almost as well.

It begins with a phone call that Nora Watts has dreaded for 15 years - since the day she gave her newborn daughter up for adoption. Bonnie has vanished. The police consider her a chronic runaway and aren't looking, leaving her desperate adoptive parents to reach out to her birth mother as a last hope. A biracial product of the foster system, transient, homeless, scarred by a past filled with pain and violence, Nora knows intimately what happens to vulnerable girls on the streets.

It starts as a prank - a way to blow off steam after a long summer at Camp Horseshoe. Among the teen counselors, tensions and hormones are running high. No wonder the others agree when Jo-Beth Chancellor suggests they scare Monica O'Neal a little.... or a lot. Monica has it coming, and no one will really get hurt. What could go wrong? Everything.

As a medical examiner, Samantha Owens knows her job is to make a certain sense of death with crisp methodology and precision instruments. But the day the Tennessee floods took her husband and children, the light vanished from Sam’s life. She has been pulled into a suffocating grief no amount of workaholic ardor can penetrate - until she receives a peculiar call from Washington, D.C. On the other end of the line is an old boyfriend’s mother, asking Sam to do a second autopsy on her son.

Anna Strong is trained for anything-until she's attacked one night, only to awaken in a dark world that exists between the living and the dead. Here, Anna struggles with her love for the two men who inhabit the realms of each: Max, a human DEA agent, and Avery, a Night Watcher who joins Anna in pursuit of the vampire who changed her life. Now, as her two worlds collide, fate plunges Anna into the ultimate battle between good and evil - where survival is not just for the living.

He performs his profane ceremony in a wooded Minneapolis park, anointing his victims, then setting the bodies ablaze. He has already claimed three lives, and he won't stop there. Only this time there is a witness. But she isn't talking. Enter Kate Conlan, former FBI agent turned victim/witness advocate. Not even she can tell if the reluctant witness is a potential victim or something more troubling still.