Darkfever by Karen Marie Moning

Darkfever

At the point when her sister is killed, leaving a solitary piece of information to her demise—a secretive message on MacKayla Lane’s cell phone–Mac voyages to Ireland looking for answers. The journey to discover her sister’s executioner draws her into a shadowy domain where nothing is as it appears, where great and abhorrence wear the same deceptively enticing cover. She is soon confronted with a much more noteworthy test: remaining alive sufficiently long to figure out how to deal with a power she had no clue she had—a blessing that permits her to see past the universe of man, into the risky domain of the Fae.