Nightbound - The Nightbound Trilogy, #1

After the horror of the Moon Madness, Roxy Quinn leaves town to clear her head. It's been too long for this Bright Elf since she's recharged her magic. When she arrives in Las Vegas she is greeted by Killian, the Dark Elf whom she has desired for a very long time. Killian, knowing Roxy needs to refuel her magic, offers her a ticket to the new show in town: an operetta performed by a vampire troupe from Europe.
Little does Roxy know that audience participation is required. A whirlwind weekend is ahead of Roxy filled with blood, lust and the possibility of something more with the mysterious Dark Elf.