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.

Three years ago, Ham retired to a quiet life in the remote desert of Northern Mexico. Realizing what she was doing would likely end in her death, she severed all ties, disappearing across international borders. Her retirement ended abruptly with a single message. The sole person in the world Ham feels the least bit of loyalty to is in trouble, in need not only of Ham but of the very skills that put her into hiding. Acting against every ingrained maxim, and ignoring the myriad warning signs popping up along the way, Ham returns north to find a great deal has changed in her time away.

Former soldier. Ex-copper. Current man on the edge. Shunned by his old colleagues, and dividing his time between a dead-end job and the bottom of a whisky bottle, former Police Scotland detective superintendent Bob Hoon’s life is a mess. Then an old face from Hoon’s Special Forces days turns up asking for help: His teenage daughter has been missing for months, the police have drawn a blank, and he needs the kind of help that only Hoon can provide. And besides, Hoon owes him one.

Court Gentry is known as The Gray Man - a legend in the covert realm, moving silently from job to job, accomplishing the impossible, and then fading away. And he always hits his target. But there are forces more lethal than Gentry in the world. And in their eyes, Gentry has just outlived his usefulness. Now, he is going to prove that for him, there's no gray area between killing for a living-and killing to stay alive.

By age 24, Letty Davenport has seen more action and uncovered more secrets than many law enforcement professionals. Now a recent Stanford grad with a master’s in economics, she’s restless and bored in a desk job for US Senator Colles. Letty’s ready to quit, but her skills have impressed Colles, and he offers her a carrot: feet-on-the-ground investigative work, in conjunction with the Department of Homeland Security. 

Joe Pickett is the new game warden in Twelve Sleep, Wyoming, a town where nearly everyone hunts and the game warden—especially one like Joe who won't take bribes or look the other way—is far from popular. When he finds a local hunting outfitter dead, splayed out on the woodpile behind his state-owned home, he takes it personally. There had to be a reason that the outfitter, with whom he's had run-ins before, chose his backyard, his woodpile to die in.

Ex-Delta Force sniper Breed has spent most of his life at war, and now he’s trying to make some time for peace. But when a veteran from his old unit is murdered in El Paso, Breed feels duty-bound to bring the killer to justice. A feeling that only grows stronger when his friend’s widow and son are also murdered. As he uses all his specialist skills to uncover the truth, Breed finds himself working with some unlikely allies - a devious CIA operative and a determined Latina reporter. Together, they uncover a conspiracy to launch a massive attack on US soil. 

Evan Smoak is a man with skills, resources, and a personal mission to help those with nowhere else to turn. He’s also a man with a dangerous past. Chosen as a child, he was raised and trained as an Orphan, an off-the-books black box program designed to create the perfect deniable intelligence asset: An assassin. Evan was Orphan X - until he broke with the program and used everything he learned to disappear. But now someone is on his tail.

The Paterson Police Department has created a cold case division, and they want to hire the private investigators known as the K Team to look into the crimes. After all, Corey Douglas and his K-9 partner, German shepherd Simon Garfunkel, recently retired from the force. Plus, another K Team member, Laurie Collins, used to be a cop as well. Their first cold case hits home for the K Team. A decade ago, at Laurie's 10th high school reunion, two of their friends simply…vanished. 

A heinous crime leads the FBI in search of answers. Blake Brier finds himself sucked back into the life he left behind. Blake grows more entangled in the plot of a hacktivist group turned terrorist organization. And when it becomes personal, Blake will stop at nothing to find the truth.

The crime sent shock waves through the entire city. But for Boston homicide detective Michael Kelly, the case hits particularly close to home. Kelly was born and raised only a few blocks from where the girl’s body was found. He still has friends living in the old neighborhood. Some are cops. Others run the Irish mob.

Ex-Army criminal investigator Rachel Hatch is a drifter. No home. No commitments. Until her sister's drowning drags her back to the town she left 15 years ago. Convinced her sister's death was no accident, Hatch partners with the local sheriff, Dalton Savage, to uncover the truth. Every answer unlocks another question, and as the investigation begins to unravel, Hatch and Savage find their lives on the line. Hatch is forced to use her special set of skills - forged on the field of combat - to learn the truth about her sister and bring those responsible to justice.

Ryder Creed and his dogs have been making national headlines. They've intercepted several major drug stashes being smuggled through Atlanta's airport. But their newfound celebrity has also garnered some unwanted attention. When Creed and one of his dogs are called in to search a commercial fishing vessel, they discover a secret compartment. But the Colombian cartel's latest shipment isn't drugs. This time, its cargo is human. To make matters worse, Creed helps one of the cartel's drug mules escape.

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.

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.