The Vida'a are a family of witches who fight vampires. When Sarah becomes a vampire, her mother orders Adia, Sarah's sister, to kill her. The Vidas declare war on the vampires, and no one is safe until Adia puts a knife through her sister's heart. I really enjoyed this book, it was intriguing, everyone had secrets, and the very foundation of the family was tested. The book takes place over a 24 hour period, so some of it is confusing, but over all it was good. I would suggest this book if you like vampires, but find Twilight to be poorly written, and too happily-ever-after. I would also suggest this book if you are looking for a quick read.