Chosen (House of Night)

Zoey Redbird's adventures at the House of Night take a mysterious turn, those who she thought were friends are turning out to be enemies, and sworn enemies are turning out to be friends. Zoey's best friend, Stevie Rae, is undead and struggling to maintain a grip on her humanity. Zoey doesn't know how to help her, but she knows that anything they find out must be kept secret. Then vampyres start turning up dead, really dead... Includes book profile and author profile. 27 chapters, 307 pages.