An interesting take on vampires and the Mayan Apocalypse.
Gretchen is an archaeologist working in the Yucatan with brilliant and eccentric Lukas Smith. They've discovered glyphs that tell the tales of the night walkers. Something Lukas is familiar with as he is one. The altar they've found was used for a sacrifice to banish a demon. And now someone has freed the demon and Gretchen & Lukas need to find a way to stop the Night Deon before she destroys life on earth as we know it.
A fascinating tale. It took me a bit to get into it as the author bounced around some but as the story unfolded it was well worth it.