A House of Night other world novel

The tear between worlds has been closed thanks to Zoey and her friends. But Other Kevin is learning how to use Old Magick in the Other World with no guidance, which could have disastrous consequences. With her younger brother's soul at stake, Zoey is determined to help him.

When the Nerd Herd regroups to celebrate Zoey's eighteenth birthday, they notice signs that Neferet might be stirring once again, so the team must overcome their petty differences and join forces in order to stop a rabid group of red vampires.