My Soul to Keep — Rachel Vincent

WHEN KAYLEE CAVANAUGH SCREAMS, SOMEONE DIES.
AND KAYLEE IS ABOUT TO SCREAM HER HEAD OFF...

Kaylee has one addiction: her very hot, very popular boyfriend, Nash. A banshee like Kaylee, Nash understands her like no one else. Nothing can come between them.

Until something does.

Demon breath. No, not the toothpaste-challenged kind. The Netherworld kind. The kind that really can kill you. Somehow the super-addictive substance has made its way to the human world. But how? Kaylee and Nash have to cut off the source and protect their friends--one of whom is already hooked.

And so is someone else...