When a highly sophisticated terror cell steals a contingent of deadly Reaper drones from a US military base, no one has to wonder for long what they'll be used for. As America's own top military technology is turned against its homeland, it looks as though, for the first time in history, the president will have no choice but to give in to terrorist demands.

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.

A major North American hydroelectric dam is blown up and the largest off-shore oil field in this hemisphere is destroyed in a brutal, coordinated terrorist attack. But there was one factor that the terrorists didn't take into account when they struck the Capitana platform off the coast of Colombia—slaughtering much of the crew and blowing up the platform—and that was the Capitana crew chief Dewey Andreas. Dewey, former Army Ranger and Delta, survives the attack, rescuing as many of his men as possible. But the battle has just begun.

John Dempsey's life - as an elite Tier One Navy SEAL named Jack Kemper - is over. A devastating terrorist action catapults him from a world of moral certainty and decisive orders into the shadowy realm of espionage, where ambiguity is the only rule. His new mission: hunt down those responsible for the greatest tragedy in the history of the US Special Ops and bring them to justice.

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.

Linda McKinney is a myrmecologist, a scientist who studies the social structure of ants. Her academic career has left her entirely unprepared for the day her sophisticated research is conscripted by unknown forces to help run an unmanned - and thanks to her research, automated - drone army. Odin is the secretive Special Ops soldier with a unique insight into the faceless enemy who has begun to attack the American homeland with drones programmed to seek, identify, and execute targets.

Meet Kolt Raynor. A Delta Force operator and one-time American hero, he is still trying to make sense of his life - and duty - after a secret mission gone bad. Three years ago, in the mountains of Pakistan, Raynor made a split-second decision to disobey orders - one that got some of his teammates killed and the rest captured. Now he’s been given a second chance to do right by his country, his men, and himself. But Raynor’s shot at redemption comes at a price.

Michael Valentine, veteran and former member of an elite private military company, has been recruited by the government to conduct a secret counter-terror operation in the Persian Gulf nation of Zubara. The unit is called Dead Six. Their mission is to take the fight to the enemy and not get caught. Lorenzo, assassin and thief extraordinaire, is being blackmailed by the world's most vicious crime lord. His team has to infiltrate the Zubaran terrorist network and pull off an impossible heist or his family will die.

Eric Steele is the best of the best - an Alpha - an elite clandestine operative assigned to a US intelligence unit known simply as the "Program". A superbly trained Special Forces soldier who served several tours fighting radical Islamic militants in Afghanistan, Steele now operates under the radar, using a deadly combination of espionage and brute strength to root out his enemies and neutralize them.

The end begins with a viral outbreak unlike anything mankind has ever encountered before. The infected are subject to delirium, fever, a dramatic increase in violent behavior, and a one-hundred percent mortality rate. Death. But it doesn't end there. The victims return from death to walk the earth. When a massive military operation fails to contain the plague of the living dead it escalates into a global pandemic.

It spite of the tightest high-tech security ever conceived, billionaire Jordan Lime is savagely killed by a weapon that tears him apart limb by limb with grim, laserlike efficiency. An army unlike any other has fired its first shot. In its ranks are the world's most vicious killers, fortified by a super-advanced arsenal against which there is no defense. It is a madman's plan to conquer the earth by destroying it. He will unleash the devastating powers of the atom and let the cataclysmic wrath of nature do the rest.

When brilliant archaeologist Dilara Kenner is contacted by Sam Watson, an old family friend who says that he has crucial information about her missing father, Dilara abandons her Peruvian dig and rushes to Los Angeles to meet him. But at the airport, Sam speaks instead of Noah’s Ark—the artifact her father had long been searching for—and the possible death of billions. Before Sam can explain, he collapses. With his dying breath, he urges Dilara to find Tyler Locke—a man she’s never heard of.

Former Marine Force Reconnaissance officer Logan West emerges from a blackout after drinking away the worries of his ruined marriage and PTSD, an all too familiar scene for the recovering alcoholic. But he wakes to more than a killer hangover: A professional mercenary has been sent to capture him. After an embattled showdown, Logan impulsively answers the dead man's ringing phone, triggering a hasty rescue of Logan's estranged wife and a global race against the clock to track down an unknown organization....

Resigned to never finding peace from the war long behind him, retired warrior Thomas Donovan is now faced with an even deadlier conflict, one that could cost him the last of his humanity. Once a member of an elite underground unit, the only wars Thomas knows now are the ones that rage inside him. All he wants is to stay under the radar of existence, trying to forget the past and isolating himself from the present. When extremists kidnap a group of women from a Christian church in Syria, the past and present collide, forcing Donovan to act.

America is under attack. Thousands lie dead after simultaneous strikes across the country. The day will come to be known as Bloody Monday. Jason Trapp, codename ‘Hangman’, was a covert operative whose feats became the stuff of legend. He was the tip of the spear—the man his country unleashed when all hope was lost. Six months ago, someone sold him out. The Agency listed him as killed in action. He lost everything—and everyone—he held dear. But Trapp’s not that easy to kill.