I've loved most of the Tess Gerritsen books I've read, and this one is no exception. It's an intense science / medical thriller with a female lead. One note is that the violence is way more intense and scary in this book than in her previous titles - it stressed me WAY out. There's something in this small town in Maine that's making kids violent, and somehow the kids being the violent ones made this scarier than most. I found myself closing the book for a few seconds to take a deep breath after some chapters.