After: The Shock (Volume 1)

"One of the most thrilling writers working today. Miss him at your peril." - Blake Crouch, Wayward Pines
The first book in the AFTER post-apocalyptic thriller series from an international bestselling author.
AFTER: THE SHOCK
After a massive solar storm erases the world's technological infrastructure and kills billions, the few survivors discover some among them have...changed.
Rachel Wheeler flees while violent mutants known as "Zapheads" roam the city streets, killing and destroying. Her only hope is to reach the mountains, where her grandfather, a legendary survivalist, established a compound in preparation for doomsday.
When Rachel discovers a 10-year-old boy, she vows to care for him even at the risk of her own life. But Zapheads aren't the only danger. Rogue bands of military soldiers want to impose their own order in the crumbling ruins of civilization. And the Zapheads are evolving, developing communal skills even as they lay waste to the society they will eventually replace.
Will Rachel reach the compound before the sun goes down forever on the human race?
---"Nobody thrills like Nicholson does. Nobody." - J.A. Konrath, Origin
Scott Nicholson is author of more than 30 books, including The Home, Liquid Fear, Creative Spirit, The Red Church, and Mystery Dance. His website is AuthorScottNicholson.com. 
"Like Stephen King, he knows how to summon serious scares. My advice? Buy everything he writes." - Bentley Little, The Haunted