Detective Reed Mattox, just three months removed from the death of his partner, has turned invisibility into an art form. Switching to the K-9, taking over the graveyard shift, moving to a farmhouse miles outside of Columbus, his every move has become predicated on putting as much distance between himself and the outside world as possible. That distance is shattered though when bodies begin turning up in The Bottoms, the poverty-stricken section of town he is assigned to patrol. Grisly, horrific scenes start to pop up in the middle of the night and the overburdened precinct has no choice but to put Reed on it. Now operating far outside of his comfort zone with a Belgian Malinois for a partner that attracts attention wherever they go, Reed is forced to unravel the murders, taking him clear across the city and back years in time, to an event that some very influential people will do anything to keep buried...

Six months have passed since the first murder investigation Detective Reed Mattox and his K-9 partner worked together, finding them in the throes of a steamy Midwestern summer, dealing with the usual increase in low-level crime that the hottest months tend to bring, when something unexpected happens. A body is found, and then another, and soon Reed and Billie are on the trail of a potential serial killer whose only pattern for his crimes seems to be no pattern at all. Battling against the heat and the clock, the K-9 team must sort through the crimes to identify a common thread that ties them all together. If they can, they may be able to stop the murders. If they can’t, there’s no telling how many more people will become victims before the dog days of summer end…

What do you do when somebody targets one of your own? Alone on the couch one night, Reed and his partner are both summoned to the hospital to find two of their colleagues have been viciously attacked, left for dead on the side of the road with very little evidence to go on. With emotions high and the entire department vowing revenge, Captain Grimes assigns the case to Reed and Billie, offering them any resources available in finding the culprit. What was at first seems just an isolated incident soon begins to spiral as more bodies are found, strewn across the greater Columbus area from Grove City to New Albany. Each victim appears to be somehow linked to the law enforcement community, though how or why they have been chosen continues to elude Reed as he is joined on the case by Cassidy Glenn from the state's Bureau of Criminal Investigation. Together they work their way from one scene to the next, piecing together what seems to be driving this perpetrator in their vendetta, hoping to bring things together enough to get out ahead of them before anybody else falls victim.

Less than a week before Christmas, Columbus Detective Reed Mattox and his K-9 partner receive a call from dispatch. The body of a young woman has been found floating in the Olentangy River, her teeth forcibly removed, her fingerprints obliterated, any chance at a positive identification residing only within the string of inexplicable tattoos inked across the bottom of her feet. Across town, an organization has taken hold in the North End, capitalizing on the recent gentrification in the area by introducing an entirely new and exotic service that the people of Central Ohio have never seen before. Preying on a captive market, they have developed a small empire in just a short amount of time, bringing with it far more than anybody could have foreseen. How these things might all tie together Reed is forced to uncover, working far beyond the usual scope of his jurisdiction, perhaps even much further than he’s ever gone before…

On the second story of a low-rent apartment complex, two women are found murdered, the scene awash with blood. One, a young nun from the local school, seems to have had the misfortune of being in the wrong place at the wrong time. The other, a local celebrity for all the wrong reasons, someone that was recently ousted from public office and is trying desperately to claw her way back into the spotlight. Called in to investigate are two people that could not be more different, in their approach or in the organizations they represent. To one side is Detective Reed Mattox and his K-9 partner Billie, a duo that call the place where the crime took place home and are fast building a reputation for tackling the toughest cases in the city. Opposite them, Sydney Rye and her own canine sidekick, Blue, a duo representing a government agency that few have heard about, their style one that operates free from the sphere of public opinion. The only thing they have in common? A deep-rooted desire to see justice served, no matter what form it eventually takes…

It started as a quiet night, a much needed reprieve for the overworked team of Detective Reed Mattox and his K-9 partner Billie. With just a single phone call from dispatch, both are plunged into a nightmare they could have never imagined. Somewhere in the greater Columbus area, a young twenty-something is sealed away inside a coffin. With no recollection of how she got there or who might have put her there, she is desperate. Armed only with a dying cellphone and a waning oxygen supply, her hours on earth are limited. Calling on every resource imaginable, Reed and Billie sprint headlong into the search, embarking on a twisted path that proves to be so much larger than they could have ever imagined.

Working in law enforcement imparts certain things in a man. The smell of gunpowder in the air. The sight of blood spatter at a crime scene. And the amount of trouble a woman is in by the pitch of her scream. Six weeks prior, on the heels of the most hellish case he could ever remember, Detective Reed Mattox and his K-9 partner, Billie, were placed on administrative leave from the Columbus Police Department. Fearful of what the media might say, the brass decided to put them at arm’s length, allowing the aftermath of that fateful night to settle. Not used to being placed on the sidelines, and no good at sitting still for long, the decision was made to travel west to his native Oklahoma and help his parents begin the long process of unpacking their new home. A process that lasted but a single afternoon before the duo found themselves within earshot of a scream too pointed to ignore. Acting on pure instinct, the two give chase, unknowingly pulling themselves into something much bigger happening across the plains for the better part of a decade. Young women with seemingly nothing in common disappear, held for months or years before turning up, while some are never found at all. Pulled in against their better judgment, but unable to ignore their true natures, Reed and Billie join with local law enforcement in search of a killer the likes of which they have never encountered…

“I know you and I have been through some things,” Reed whispered. “Some crazy, crazy stuff. But we have never - and will never - work a case as important as this one.” Eighteen months ago, Detective Reed Mattox didn’t just lose his partner, the woman he met on his first day at the police academy and worked with for the entirety of his career thereafter. He lost his confidante. His sounding board. His support system. His best friend. Victim to a senseless shooting during a routine traffic stop, the details of that night are still as elusive to Reed as they were more than a year before. Months of scouring every detail, poring through every resource, have revealed nothing, heightening the guilt he still carries for being more than two thousand miles away at the time. When the phone rings late one evening, Reed hopes it is the brass within the Columbus Police Department calling to let him know he and his new K-9 partner Billie have been reinstated. That the administrative leave they were placed on in the wake of their last major case has been lifted, freeing them from the personal Hell they’ve been stuck in for the last couple of months. What he hears instead is something much bigger, cleaving straight to his core, and perhaps finally allowing them to close a case nearly a year and a half in the making…

Saying nothing in return, Reed listened as the phone cut out, the forest returning to relative silence around them. His hands still cupping the underside of his partner’s face, he tilted his own down to match it, feeling the damp warmth of her fur against his skin. “This girl just saved my ass,” he whispered. “That’s what the hell happened.” For the past two months, Detective Reed Mattox and his K-9 partner Billie were in limbo. Victims of their own success, they were plucked from their post on the graveyard shift at the 8th Precinct and thrust into a newly created role working with the governor’s office when a young woman is shot down outside her front door. Immediately written off by some in the small town as nothing more than a tragic hunting accident, closer examination proves it to not just be a murder but an execution. A very pointed and deliberate killing Reed fears may be the start of things as he and his partner begin unraveling what is behind such a heinous act. Motivations stretching back several years, pulling them across much of the state and placing them both in harm’s way as they’ve never experience before…

Detective Roese looked up, a strand of lank hair hanging across her face. Blood staining her bare hands and forearms, she kept her weight pitched forward, pressing down on the sucking chest wound, fighting desperately to prevent another tally on the list of recently deceased. “You can’t go out there. Best case, you never find him in the middle of all this. Worst, it’s a trap.” Outcomes Reed had already considered and dismissed, his faith placed in the inky black K-9 partner by his side. “Even a ghost leaves a scent.” Months into the new hybrid role that was created for Detective Reed Mattox and his K-9 partner Billie, things have returned to some semblance of normalcy. A summer spent working the graveyard shift out of the 8th Precinct with the Columbus Police Department and only the occasional side job for the state Bureau of Criminal Investigations. A stretch allowing them to put the chaos of the spring behind them and to largely avoid any interaction with the governor who selected them for the role. Their moment of peace ends abruptly with a call to the small town of Piketon in the middle of the night. A request for outside presence to oversee an investigation into the sudden and inexplicable death of seventeen-year-old Bridger Van Cott. The star quarterback of the local high school team was found dead behind the wheel of his Trans Am six days before the season opener, the vehicle festooned in the colors of the team’s rival and first opponent. For a community still reeling from a tragedy of national proportions just a few years prior, the newest incident has the potential to become volatile. Reed and Billie’s first task is to tamp the simmering tensions and avoid. a collision brewing between neighboring communities, Their second, to determine what happened to the young man who was already awarded a full scholarship to play major college football next year. Someone with no known enemies or medical conditions and a crime scene containing no signs of a break in or struggle. A murder so perfect, it was almost as if it was committed by…a ghost.

For a moment, she looked as if she had turned to stone. Any slight twitches of her facial muscles ceased. Even her chest stopped rising and falling as she took in air. Everything went completely still, her eyes glazing as she stared down at the mug in her hands. A pause that lasted several seconds before she snapped her eyes upward and asked, “There were more?” “Yes.” “How many?” When Reed Mattox and his K-9 partner, Billie, received a direct summons to the personal residence of Governor Thomas Cowan, he assumed it was another escalation over the particulars of their new position as liaisons between the Columbus Police Department and the state Bureau of Criminal Investigations. Another overstep by the highest ranking elected official in Ohio, trying to bring Reed and Billie directly under his control. What he didn’t expect was to enter the man’s home and find that, not only was the case presented to them legit, but unlike anything they had ever seen. A friend and associate of the governor, kidnapped, sedated, and tattooed across the entire length of his forehead. PRIDE. A single word, with no clear cause or motivation, until a second victim turns up the next day. GREED, proceeded in order by SLOTH. The fabled seven deadly sins, branded on people from across the state. Victims with no obvious connection between. Knowing more attacks will come, Reed and Billie fling themselves headlong into a search unlike anything they’ve encountered before. A hunt that brings them in contact with people trying desperately to keep secrets from the past hidden. Secrets someone is fighting to make certain they never forget.