Cinnamon and Salt: Sentinel Series, Book One

Demons, ghosts, psychics... Nicky Dubois doesn't believe in any of these things. Sure, she enjoys watching them on TV, but in real life? They're just nonsense. Or are they? When an inexplicable epidemic rages through Nicky's high school, she is forced to turn to the new guy, Asher Rowan, for help. Asher may be the only person who believes her when she says that evil forces have come to her home town. Then again, he may be the cause of it.