As the first waves of injured bystanders, guardsmen, and rioters arrived at hospitals, it became apparent that a deadly new disease had been unleashed on the population. Whether the virus was naturally occurring or an escaped lab experiment, Cade hadn't a clue and wasn't especially concerned until he learned of its unprecedented virulence, unusual method of transference, and the fact that, according to the news, it brought the newly dead back to life, semi-mindless, and with an insatiable desire to feed on the flesh of the living.

After running and gunning across much of the western US, Cade Grayson, former Delta Force operator, is finally reunited with his wife, Brook, and daughter, Raven. Hours after arriving at the relative safety of Schriever Air Force Base in Colorado Springs, the new Capital of the United States, Cade is approached by the new president, Valerie Clay. Her request is simple: she appeals to the patriot in him to rejoin the unit that he left for civilian life 15 months prior and once more go into harm's way, taking the fight to the enemy.

Reeling from a surprise attack, and with two fires burning out of control, Schriever Air Force Base goes on high alert. Former CDC Scientist Sylvester Fuentes, the apparent target, is killed along with others. Destroyed in the conflagration was the Omega antiserum Fuentes had been working to perfect and just hours prior had tested successfully on one of the recently infected.

Outbreak - Day 16: With an estimated 99 percent of the United States' population having already succumbed to the Omega Virus and been reanimated to form roving hordes of flesh-eating monsters, two groups of survivors struggle against long odds to survive the zombie apocalypse.

Allegiance picks up two days after A Pound of Flesh left off. Outbreak - Day 15. With an estimated 99 percent of the United States' population having already succumbed to the rapidly spreading Omega virus, and countries and cities worldwide teeming with the dead, the struggle to survive the zombie apocalypse continues unabated in the high desert of Colorado.

Cade Grayson, father, husband, and former Delta Force operator collected his fair share of ghosts as the Omega virus ravaged the United States, turning the majority of her population into mindless automatons hungering for human flesh. Wearing incredulous stares, the faces of those ghosts - dozens of men, women, and children he was unable to save during his many forays into the Z-infested wasteland - visit him nightly during the early morning hours when defenses are dulled and REM sleep has him in its firm grip.

In the three weeks since mounting a brash rescue mission to a zombie-infested Los Angeles and returning home to find lives of loved ones hanging in the balance, Cade has occupied himself with runs outside the wire to procure supplies necessary to ride out what the Farmer's Almanac predicts will be a long, cold winter. As Cade and his team seize an unforeseen opportunity provided by the plummeting temperatures, he quickly realizes they are in a race against time - and nature's fickle whims.

Etna Station and everything Mike cares about is on the brink of collapse. All will be lost unless Mike can convince his team to heed the crazed warnings of an old friend. Against all odds, they must make a dangerous journey, leaving all at the mercy of a familiar foe who won’t rest until the world is brought to its knees. Will the universe regain balance? Or will fate finally be sealed against our heroes? Find out in what may be the most action-packed chapter of the Zombie Fallout saga thus far.

The Talbot clan has settled in to life at Etna Station. Mike has earned the rank of Lieutenant, but there’s no time to rest. Colonel Bennington has ordered Mike and his squad of misfits on a secretive mission to New York City, where they are tasked to complete a complicated rescue that rapidly becomes nearly impossible to accomplish. Cut off from all support, they face what may be the single most dangerous threat to all mankind as a super predator emerges from the rubble of the once vibrant city, now a broken shadow of its former self.

After decades of planning, the contagion was unleashed, and overnight hundreds of millions died and came back as rampaging, undead monsters. The living that had been lucky enough to survive the first day of carnage, lucky enough to be in the right place, and lucky enough that some of them had the skills to survive soon found out there was much more to worry about than just zombies.

On Zero Day of the first and last cyberwar in human history the internet went dark, transport and power grids collapsed, and cities began to starve. Ten days later millions have died from thirst and starvation, from violence, and from the simple failure of the world’s machines to keep them alive. This second installment of John Birmingham’s End of Days trilogy finds James O’Donnell and his friends Rick, Michelle and Melissa hunkered down in the wilderness, where they know a horde of starving, desperate exiles from the graveyard of the US East Coast is heading their way. 

Like a fragile house of cards in a hurricane, Presidents, Premiers, entire governments and their ruling bodies disappeared instantly. Some had ensconced themselves in deep underground bunkers or remained holed up in fortified strongholds, but history would tell that most had been swallowed up by the dead - never to be heard from again. On that last normal Saturday in July, while an unknown virus indiscriminately wreaks destruction and death to all four points of the compass.

Cade Grayson - husband, father, patriot - discovered two undead enemy soldiers on American soil, and soon the official call to duty came directly from the President herself in a transmission beamed by military satellite to Cade's refuge in rural Utah: It was time to take up arms in defense of his country once again. Valerie Clay’s hard-to-fathom video footage, showing thousands of enemy soldiers establishing beachheads all along the West Coast, made it impossible to resist. He was a former US Army Delta Operator and he had to come to the aid of his dying country.

Following a successful mission to the nation’s former capital, Cade Grayson - doting father, faithful husband, and patriotic Delta Force operator - returns to the compound in rural Utah to find his life irrevocably altered. Five days later and still reeling from the catastrophic event that pushed him physically and mentally to the edge of the abyss, Cade sets out to fulfill a longstanding promise: escort his daughter, Raven, outside the wire to begin the long process of honing the skills she will need to survive the zombie apocalypse.

Army veteran Lee Riker is staying in an Atlanta shelter and supporting himself with the odd carpentry job when his sister, Tara, summons him home to Indiana for the reading of their mother’s will. Riker boards a Greyhound bus in Atlanta with his duffel bag, less than $200 to his name, and a secret he must protect at all costs. Riker makes it to Middletown only to learn his sister has recently witnessed a gruesome death. Insisting she saw the victim rise from a pool of his own blood to attack the Samaritan rendering aid, Tara floats the idea that the man may have been a zombie.