Witchling

The D'Artigo sisters are half-human, half-Faerie operatives for the Otherworld Intelligence Agency, but their mixed heritage often causes their powers to go awry. When a fellow operative is murdered at the Wayfarer Inn, a portal to Otherworld, all clues point to Shadow Wing, a powerful demon leader. It's up to Camille, a witch with unpredictable magic, her shapeshifting sister Delilah, and their vampire sister Menolly to stop Shadow Wing and his minions from invading Earth, proving that even with faulty wiring, the D'Artigo girls can kick some serious ass.