Halo: 1

A small town is touched by angels; a powerful, forbidden romance forms, and intrigue and action ensue as the Dark Forces resist the angels influence, in the first book of Alexandra Adornetto's heartfelt YA Halo Trilogy. Three angels are sent down to bring good to the world: Gabriel, the warrior; Ivy, the healer; and Bethany, a teenage girl who is the least experienced of the trio. But she is the most human, and when she is romantically drawn to a mortal boy, the angels fear she will not be strong enough to save anyone—especially herself—from the Dark Forces. Is love a great enough power against evil?