Rosalie and David are finally making a home together. Life couldn't be more perfect except for the niggling problems of the disappearing clans, friends' complicated love lives, and Billy's persistent stalker. If only Rosalie had a cupid to offer advice. Meanwhile, a mysterious illness is affecting residents of Seaglades. It's probably the flu and has nothing to do with bygone tales of an invisible horror. Then again, maybe life isn't so perfect after all. Trapped for centuries, a dark and deadly presence stirs beneath the Florida ground with a insatiable hunger for humans and Integrals. Can Rosalie, David, and their friends discover a way to confront an ancient evil before it unleashes doom on a modern world?