Gibby's sixteenth birthday starts with a beautiful man licking blood off a hunting knife.

She's pretty sure it's her blood.

And if that isn't freaky enough—he's wearing a powdered wig.

Who dreams about powdered wigs?

The worst part isn't the blood. Or the knife. It's that when Gibby wakes up, it doesn't feel like she's just had a dream.

It feels like she's been sent one.

Gibby had a plan: quit her semi-famous family band, stay home to finish high school like a normal person, and maybe figure out what's happening with the boy next door.

Then her hundred-year-old great-aunt gives her an ugly, ancient hand-carved guitar. And Gibby inherits more than an instrument.

She inherits a hidden war fought with music, an ancient evil that's hunted her family for generations, and a guitar with very strong opinions about how she should spend her summer.

Gibby wants a normal life. But the guitar has other ideas.

Because if she walks away, people will die.