When a minor terrorist group, looking to make its mark, aims to take out a “soft target” in the United States — one relatively unguarded yet which can be hugely damaging to the US — the race is on for Agent Zero to discover their object and stop them before it’s too late. Yet Zero faces his own battles: When he is targeted for assassination and someone close to him ends up the victim instead, it sends his life into a downspin, and allows him only course of action: vengeance. 

In Any Means Necessary, nuclear waste is stolen by jihadists in the middle of the night from an unguarded New York City hospital. The police, in a frantic race against time, call in the FBI. Luke Stone, head of an elite, secretive, department within the FBI, is the only man they can turn to. Luke realizes right away that the terrorists’ aim is to create a dirty bomb, that they seek a high-value target, and that they will hit it within 48 hours. A cat and mouse chase follows, pitting the world’s most savvy government agents versus its most sophisticated terrorists. As Agent Stone peels back layer after layer, he soon realizes he is up against a vast conspiracy, and that the target is even more high value than he could have imagined—leading all the way to the President of the United States. In Oath of Office, a biological agent is stolen from a biocontainment lab. Weaponized, it could kill millions, and a desperate national hunt ensues to catch the terrorists before it is too late. Luke Stone, head of an elite FBI department, with his own family still in jeopardy, has vowed to walk away—but when the new President, barely sworn in, calls him, he can’t turn his back on her.

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.

On his last combat deployment, Lt. Cmdr. James Reece's entire team was killed in an ambush that also claimed the lives of the aircrew sent in to rescue them. But when those dearest to him are murdered on the day of his homecoming, Reece discovers that this was not an act of war by a foreign enemy but a conspiracy that runs to the highest levels of government. Now, with no family and free from the military's command structure, Reece applies the lessons that he's learned in over a decade of constant warfare toward revenge.

On the snow-covered slopes of Utah, the unthinkable has just become a nightmarish reality: thirty Secret Service agents have been viciously executed and the vacationing president of the United States kidnapped by one of the most lethal terrorist organizations in the Middle East - the Fatah Revolutionary Council. But surviving agent and ex-Navy SEAL Scot Harvath doesn't believe the Fatah Revolutionary Council is responsible for the attack.

When elite Delta Force soldier Luke Stone joins a secretive government agency, he is dispatched on the mission of a lifetime: a whirlwind race across Europe and the Mid-East to save the President’s daughter before she is beheaded by terrorists. 

When elite Navy SEAL Troy Stark is forced into retirement for his dubious respect for authority, he dreads the quiet life awaiting him with his brothers and buddies in Yonkers, New York. But the quiet doesn’t last long: The NYPD needs Troy’s military expertise to help find and stop a major terrorist threat to New York City. To preempt the attack, they need him to fly to Europe and stop it at its source—using any means necessary. 

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.

After a covert mission became personal, the only way elite counterterrorism operative, Alexander King, could keep his loved ones safe, and the eyes of Washington's enemies blind to his existence, was to disappear. A year after his family buried a body they thought was his, King saves a young woman from a car bomb in London, and that's when his work in the shadows becomes complicated. Because she's not who he thinks she is, and the web that King is pulled into is tangled with enemies that reach the highest levels of the United States government.

Matthew Riker keeps to himself, doesn't cause trouble, and never talks about his past. But after a chance encounter with a woman and a small child on the run, Riker will have to make a choice: use his hard-won skills to protect two innocent victims, or stay in the safety of his quiet life. What follows is an adrenaline-soaked thrill ride that will take Riker on a cross-country chase, through the seedy underbelly of a New York criminal empire, and into the darkest places of the human heart.

Meet Jake Oliver. The day will come when he's one of the best cleaners in the business, a man skilled at making bodies disappear. At the moment, however, he's a 22 year old rookie cop, unaware his life is about to change. In a burning barn a body is found--and the fire isn't the cause of death. The detectives working the case have a pretty good idea about what went down. But Officer Oliver thinks it's something else entirely, and pursues a truth others would prefer remain hidden - others who will go to extreme lengths to keep him quiet.

Joshua Duffy is a Close Protection Agent — a professional bodyguard — and he's one of the world's elite operatives. That is, he was until his last mission in Lebanon. Against all odds, Josh got his primary out alive, but the cost was high. Josh lost his lower left leg. 

Former CIA case officer Charles Jenkins is a man at a crossroads: in his early sixties, he has a family, a new baby on the way, and a security consulting business on the brink of bankruptcy. Then his former bureau chief shows up at his house with a risky new assignment: travel undercover to Moscow and locate a Russian agent believed to be killing members of a clandestine US spy cell known as the seven sisters. Desperate for money, Jenkins agrees to the mission and heads to the Russian capital. 

When you're the best at what you do, it's not always easy to walk away. Nathan McBride was retired. The trained Marine sniper and covert CIA operative had put the violence of his former life behind him. But not anymore. A deep-cover FBI agent has disappeared along with one ton of powerful Semtex explosive, enough to unleash a disaster of international proportions. The U.S. government has no choice but to coax Nathan out of retirement.

Rumor has it there's a Russian you can turn to if you're very rich, and need dirty deeds done without a trace. The CIA calls him Ivan the Ghost because he's operated for years without leaving a trail or revealing his face.