The crew of the USCG Buoy Tender Sassafras, out of Honolulu, has embodied the Coast Guard’s motto: Always ready, in every mission, every circumstance, every crazy thing mother nature and the US government has seen fit to dump in their laps. They’ve been doing so much, with so little, for so long, they feel ready to face anything. But then, they’ve never had to face a 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.

On a hot July day on the plains of Kansas, a US Army mechanized infantry company from the First Infantry Division gets a very vague warning order, and the young troopers saddle up on their steel beasts to go try to control "civil unrest".

The Monster Under the Ground at Yellowstone has been biding its time and building pressure for 640,000 years. The US is now more divided than at any time in its history, since the Civil War. What would happen if it blew tomorrow? Pressure is that story, and Fall is only the beginning.

When a series of devastating terror attacks brought down the United States, Conor and Barb assumed they were safe in their compound. They had everything they needed. They were armed and highly trained. But then, Barb was kidnapped. The kidnappers didn’t know why Conor was known as The Mad Mick. They didn’t know the fear and respect his name invoked in the shadowy underworld of covert operations. They didn’t know that when it came to protecting his family, he was without conscience, without compassion, and without equal. But they would soon find out.