Death Callers, by Raven Hudgins

Aislin Gray has finally turned eighteen—the pivotal moment in a banshee’s life, but with it comes her first Death Call—visions of someone’s death. It isn’t just anyone’s death—it’s Kaelin’s, the human who left so long ago.

Now he’s back and Aislin will do anything to keep it that way, even if it means starting a war.