A debilitating virus emerges in India and quickly burns its way through the densely populated areas of Asia. The victims suffer for days even weeks on end until finally succumbing. Streets are empty and major cities are mere graveyards. Because of the slow killing nature of the virus, attempts to contain it to one continent seemingly work at first, but human smuggling into infection-free areas cause the virus to break borders globally.

William Allen presents book 2 in the Tertiary Effects series. 

While a cyberattack crippled half the nation’s power grid, enemies of the United States launched a super EMP over the Midwest, sending the nation back to the Stone Age. For Raine Caldwell and her neighbors, it couldn't have come at a worse time. Deep into the coldest Midwestern winter on record, the nation is plunged into frigid darkness. With emergency services crippled by the lack of transportation and streets snarled with stalled cars, a spark ignites, and the city of St. Louis is engulfed in flames.

When a viral apocalypse kills 97 percent of the people on the planet, the survivors' humanity is hanging by a thread. Amid the leftovers of civilization, ex-Army Ranger Jason Larsen is reminded of the meaning of hope, family, and loyalty by a dog and a young boy who are as alone as he is. The survivors he seems to collect become family, and that is very bad news for those who think they run the apocalypse.

Alex Reid, a member of the US Coast Guard, is on the brink of divorce. On the day his wife arrives on the east coast to have him sign papers, the nation's crippled by a string of increasingly bizarre disasters. When the internet, communication, and power grid goes down, and explosions erupt across America, they soon find themselves fighting to stay alive. Desperate to protect family, they're forced to venture across a chaotic and powerless country in search of their daughter. As the world ends and panic takes hold, they must overcome more challenges than a broken marriage to survive. 

In a small Montana town, it takes four minutes for every man, woman, and child to die. It isn’t a virus or biological attack, but rather the beginning of a geological event that triggers a chain reaction across the globe with devastating effects. A repeat of an extinction event that occurred millions of years earlier. There is no stopping it. The only way to survive is to stay ahead of it. Tom Foster hasn’t flown in decades, yet, he sets his fear aside for a vacation with his grown sons.

From out of the clear blue sky, an unknown chunk of rock from the frozen void strikes the Earth with unimaginable force, gouging a wound into the very crust of the planet. Millions die in an instant, and millions more await the end as the looming catastrophe unfolds...Thousands of miles away from the disaster, a call comes in the middle of the night. Families act, and react, and while panic spreads, the world keeps on spinning. Maybe a little slower, and perhaps with a teeny bit more of a tilt, but such things are a mere trifle to the existence of a planet. 

In an instant, everything stops. No lights. No phones. No transportation. When coordinated EMP and Cyber attacks wipe out the nation’s power grid and communications, ultra-marathon runner, Maddie Langston, is forced to run for her life. Stranded in a Chicago airport when the lights go out, Maddie is in a race against time. According to her father, she doesn’t have long before the city descends into chaos. She must leave the airport before it is too late.

After five weeks, the survivors thought the worst was behind them, they were wrong. When rumors of state safe zones are broadcast over the radio, Alex and Garcia journey north to investigate a glimmer of hope. But what they find will shatter their lives forever. Still reeling from a second attack, Danielle Gardiner uncovers more secrets about Ryan and a potential third wave. With higher stakes and even more to lose, Sophie is drawn away to assist Homeland Security in a plan that will either save the nation or destroy it.

Highly contagious, a deadly virus rips through the country like wildfire. No one is safe. Albuquerque, NM is quickly overrun. People drop like flies. And with no one left to keep things running, they'll soon be plunged into darkness. Matt's a normal office worker with an eye for being prepared. But now that a real catastrophe has hit, he quickly realizes that he's not prepared enough. Much of his gear is back at home, and he's trapped at the office. Will he be able to cross a city that's quickly descending into chaos?

Landon Gray, a skillful "ferry pilot" who delivers planes to customers has one final drop in Alabama before Christmas. But when an EMP causes the plane he’s in to crash on the remote, snow-covered mountains of North Carolina, he’s rescued by Beth "Bluebird" Sullivan, who claims to have lived off the grid since she was born. Beth brings him back to an isolated cabin to recover while waiting for her father to come back from the nearby town. When he doesn’t return, Beth grows increasingly worried while Landon struggles with being far from home.

A week ago, the nation crumbled under a mysterious cyber-attack that crippled the power grid, took out communications, killed thousands, and forced Alex Reid and his ex to flee across a lawless country in search of their daughter. A second wave of attacks are unleashed. After blowing a tire on the outskirts of Denver, Alex and the survivors find themselves trapped in a ruined city overrun with autonomous killer drones.

Kasper Wallace is a screwup. Everything he tries to do in life falls apart. He struggles to rise above his troubles...until the day a global pandemic gives him a purpose. His years of immersion into the apocalypse scenarios of books, movies, and video games, provides him with the knowledge that makes him a survival asset.

On the fifth year anniversary of his wife Hannah's disappearance, small-town cop Noah Sheridan takes his son Milo to a local ski resort for some much needed father-son time. In a blink, the power grid goes out. Phones and cars stop working. What starts as a day of holiday fun soon turns into a deadly fight for survival. And when an impending blizzard cuts off the town from the rest of civilization, it'll take everything Noah has to keep his family and friends alive.

The Sheriff's Department is forced to hand the investigation of the bones to the state police. The case has become too big for the department to investigate alone. The group complies and tries their best to mend fences within the law enforcement community and the neighbors. Surprisingly, their generosity is much appreciated.