Avarice, Halo 2

Witches are disappearing in the paranormal community, and the only person that can stop it is Luna, a doppelg nger, wearing the host of a sassy witch named Urban Rose with Fae blood riding through her veins. Together with Gaire, a wendigo half breed, Luna sets out to solve the mystery. But catapulted into a world they can't get out of; the doppelg nger and wendigo find themselves separated and in the middle of a Fae revolution. If that isn't bad enough, Luna learns her host has a mind of her own and aims to use it. When Urban Rose finds a lover, and insists on getting closer, Luna must figure out if the warlock who has captured her host's heart is trying to help them get back to their own world or destroy them in his, the second circle of hell. Avarice, Halo 2, a place Down Under.