Last Exit by Max Gladstone

When Zelda and her friends first met, in college, they believed they had all the answers. They had figured out a big secret about how the world worked and they thought that meant they could change things.

They failed. One of their own fell, to darkness and rot.

Ten years later, they've drifted apart, building lives for themselves, families, fortunes. All but Zelda. She's still wandering the backroads of the nation. She's still fighting monsters. She knows: the past isn't over. It's not even past.

The road's still there. The rot's still waiting. They can't hide from it any more. Because, at long last, their friend is coming home. And hell is coming with her.

“A novel carved by hand out of salt and rock and bone. This is what the Great American Novel wishes it could be: honest, furious, in love.”―Hugo and Nebula Award-winning author Amal El-Mohtar