The serene beauty of West Texas's Big Bend National Park is shattered when four hikers are brutally ambushed by a sniper. Only one survives to report the murders. When investigators come up with nothing, they're left wondering if this is a single incident - or the beginning of a rampage. One week later, Texas Ranger Sonny Hawke drives his 3500 Dodge Dually into the park, determined to unearth the truth. Before he knows it, he's in the same sniper's crosshairs. A drug and human smuggling cartel has lured him to remote backcountry, looking for payback for an old grudge.

Judge. Jury. Executioner. One man is taking the law into his own hands. His targets are the criminals who slipped through the justice system. Dangerous men. Violent men. Depraved, cold-blooded killers. From California to Texas, this relentless avenger hunts down the unpunished and sentences them to death. But now he's on Sonny Hawke's turf. A Texas Ranger committed to his job, Hawke will not abide vigilante justice - even if the targets deserve to die. With each murderous act of vengeance, the hunter becomes more like the vermin he's exterminating.

It's a stunning attack, lightning quick and chilling in its execution. A merciless gang of terrorists seizes the Presidio County Courthouse in the midst of the worst blizzard West Texas has seen in a century. Loaded down with enough firepower to outfit an army, the attackers slaughter dozens, take all survivors hostage, and assume complete control. The nation - and the US government - are at their mercy. Or so they think. They don't know that a seasoned Texas Ranger is also inside the courthouse.

Tucker Snow is as tough as they come, hardened by decades working as an undercover narcotics agent for the Texas Department of Public Safety. Through special dispensation from the governor, he and his brother Harley cut a wide swath through the criminal element of Northeast Texas. But tragedy comes calling after taking a dream job as a special ranger with the Texas and Southwestern Cattle Raisers Association, when Tucker's wife and toddler are killed in a horrific traffic accident caused by a drug-addled felon.

In 1964, when Ned Parker, farmer and part-time constable, is summoned to a cornfield one hot morning to examine the remains of a tortured bird dog, he discovers that there is a dark presence in their quiet community of Center Springs, Texas. Ned is usually confident handling moonshiners, drunks, and instances of domestic dispute. But when it comes to animal atrocities—which then turn to murder—the investigation spins beyond his abilities.

As a decorated undercover DEA special agent, Garrett Kohl has traveled the world - and fought in most of it - but it’s the High Plains of northwest Texas he calls home and dreams of returning to one day. Kohl is in the middle of an assignment in Afghanistan when his commander orders him back to Texas on a short mission expected to take a week at most. But Kohl is unsettled to discover that he’s moving from one kind of war to another.

Navy SEAL Keith “Chunk” Redman has been one of the military’s top doorkickers since the day he pinned on his trident: loyal, single-minded, lethal. Tasked to lead a new, covert team of Tier One SEALs—the most elite special operators in the world—Chunk can no longer simply rely on the status quo. To safeguard America, he needs help to stay a step ahead of its adversaries.

Tracy Crosswhite has spent 20 years questioning the facts surrounding her sister Sarah’s disappearance and the murder trial that followed. She doesn’t believe that Edmund House - a convicted rapist and the man condemned for Sarah’s murder - is the guilty party. Motivated by the opportunity to obtain real justice, Tracy became a homicide detective with the Seattle PD and dedicated her life to tracking down killers.

US Marshal Arliss Cutter is a born tracker. Raised in the swamplands of Florida, he honed his skills in the military, fought in the Middle East, and worked three field positions for Marshal Services. When it comes to tracking someone down - or taking someone out - Cutter's the best. But his newest assignment is taking him out of his comfort zone to southeast Alaska. Cold, dark, uninhabited forests that are often shrouded in fog. And it's the kind of case that makes his blood run cold.

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.

As a member of the elite Air Force Pararescue, Travis Lane abides by the motto “These things we do, that others may live.” After an injury forces him to consider retirement, he is blindsided when his brother-in-law is killed in the line of duty, leaving Lane as the sole support for his sister and the family farm they can no longer afford. Desperate for something to help them keep the farm, Lane accepts an offer to join Broadside Solutions, a private company with specially trained military operatives who provide protection for clients all over the world.

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.

If you love mysteries with action, suspense and a touch of humor and romance, then the David Wolf series is for you.

There's always more to the story, more details to paint the picture. Are you addicted to Slaughter? Vacation turns into a fight for survival, and you'll never guess what's in the back of that truck. That follows with a tale of how a diner dishwasher infiltrates a drug cartel. Next, a notorious assassin gets a firsthand glimpse of the myth behind the man. Finally, a first day on the job ends in chaos and carnage.

Homicide is always an abomination, but there is something exceptionally disturbing about the victim discovered in a high, lonely place: a corpse with a mouth full of sand, abandoned at a crime scene seemingly devoid of tracks or useful clues. Though it goes against his better judgment, Navajo tribal police lieutenant Joe Leaphorn cannot help but suspect the hand of a supernatural killer.