Queen Takes Darkness Prequel by Joely Sue Burkhart — book slip

Helayna Ironheart is trapped in a realm of darkness, suffering at the hands of a captor who feeds on her pain. Her only hope lies in embracing her power as an Aima vampire queen, but calling her guardian Blood seems impossible when she's stuck in an alternative dimension at the bottom of the world tree. To escape, she must confront the darkness itself.

For fans of dark, steamy vampire romances with a twist.