Creatures that once lived in the shadows, hidden from humankind, have risen, spreading like a plague across the globe over the course of a single night. Their numbers growing exponentially through infection, these seemingly unkillable creatures have swallowed up whole cities and collapsed unprepared governments. Survivors call it The Purge.

It's been six years since a terrifying breed of seemingly unkillable creatures emerged from the darkness to topple the unprepared governments of the world, in the process knocking mankind down the food chain. Survivors called it The Purge. A few brave souls rose from the ashes of the old world to fight back, often against overwhelming odds. Led by indomitable heroes, they risked everything to achieve a final, stunning victory over the supernatural "ghouls" in The Battle of Houston. Five years later, what remains of the ghouls have fled back into the shadows.

Allie Krycek is not someone to be crossed. If you hurt the ones she loves, she'll come after you. And you don't want Allie Krycek to come after you. The Allie Krycek Series Box Set contains the first three books in the series.

History books call it the Purge, and it altered the course of human history. A breed of seemingly unkillable creatures that once lurked in the shadows of mankind's past finally revealed themselves. Driven by an insatiable lust for human blood, these monsters - dubbed "ghouls" by some - consumed the globe in one bloody, awful night.

It was a day like any other when suddenly the world changed. The universe reached a threshold humanity didn’t even know existed, and it was time to finally be integrated into the vast multiverse. A place where power is the only thing anyone can truly rely on.

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.

The human race is all but extinct after a war with Partials - engineered organic beings identical to humans - has decimated the population. Reduced to only tens of thousands by RM, a weaponized virus to which only a fraction of humanity is immune, the survivors in North America have huddled together on Long Island while the Partials have mysteriously retreated. The threat of the Partials is still imminent, but, worse, no baby has been born immune to RM in more than a decade. Our time is running out.

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.

Jack Walker and Michael Talbot come from two worlds; the same, yet different. They both find themselves transported into an alien one, where things aren’t as they seem. While it appears similar to the ones they come from, there are some terrifying differences. Is it a dream? Or has reality been somehow warped? Jack comes from a world filled with nocturnal creatures that were once human, but now seek to destroy the last vestiges of humanity.

Follow the desperate journey of a scientist who will stop at nothing to save the woman he loves from a disease that is slowly consuming her body. But his actions have unintended consequences that plunge the world into a bloody and chaotic apocalypse, where the living are outnumbered by the ravenous, superhuman zombies that roam the streets.

Eric Riordan was once a wealthy man leading a comfortable, easy life. Until one day Gabriel, his oldest friend, Marine Corps veteran, and a former mercenary, told him how the world was going to end. He did his best to prepare. He thought he was ready for anything. He was wrong. As the dead rise up to devour the living, one man finds himself struggling to survive in the ruins of a shattered world. Alone, isolated, and facing starvation, his only chance is to flee to the Appalachians and join forces with Gabriel.

The invaders are gone. Earth is in ruins. The strong prey on the weak. In the wastelands of what’s left, a lone gunslinger delivers his own brand of justice. Some call him lawman. Some call him madman. Some call him vigilante. Some call him killer. Some call him legend. They all call him...the Sheriff. This is his story.

Allie Hilts was still in high school when a fire at a top-secret research facility released an air-borne pathogen that quickly spread to every male on the planet, killing most. Allie witnessed every man she ever knew be consumed by fearsome symptoms: scorching fevers and internal bleeding, madness and uncontrollable violence. The world crumbled around her. No man was spared, and the few survivors were irrevocably changed. They became disturbingly strong, aggressive, and ferocious. Feral.

Millions died when the Enillo Virus swept the earth. Millions more were lost when the victims of the plague refused to stay dead, instead rising to slaughter and feed on those left alive. For survivors like John Talon and his son Jake, they are faced with a choice: Do they submit to the dead, raising the white flag of surrender? Or do they find the will to fight, to try and hang on to the last shreds of humanity?

Fifty people go to sleep in their own beds and wake up in a compound in the middle of the jungle. Men and women from all walks of life with only one thing in common - none of them know where they are or how they got there. Alex is a paratrooper. Yael is a mathematician. Max is a law professor. They can't leave - a lethal barrier surrounds the facility, but no one knows if it's there to keep them in, or to keep something out.