Blood Sacrifice — Jill Cooper

Lourdes has been slain and the new queen of the underworld has been chosen. It was the day the Blood sisters had been striving for. The day where they would be free of Lourdes and could go back to living normal lives, but with the underworld's throne empty, the Earth plunges into chaos. Rivers turn black, demons run amok, with more chaos is about to be unleashed. All the while demon hunter, Duncan Jasper, is prisoner of the enemy. Jessica will stop at nothing to free him from Vain, a bounty hunter who trades in the lives of humans. Getting into her stronghold won't be easy, and Vain will be expecting a fight, but what she won't be expecting is Jessica's secret weapon. The newly crowned queen of the underworld, her very own sister. Jessica hopes Amanda can resist the dark magic now surging through her veins long enough for a special artifact-The Ruby Heart-to be found, the one thing that can purify Amanda's heart and break the awful curse. But Amanda has other plans. If she sacrifices herself to the underworld, she hopes to do one better. Kill the demons from the inside and free the trapped souls being tormented for an eternity. One way or another, it will surely come to sister vs sister in a full-scale war. All in the name of Blood.