This heart-thumping thriller will keep you guessing! Who is behind Lia’s father’s death—and will she be the next victim? I hadn’t heard of the flash mob violence in Chicago, even though I live in the suburbs (now that I’ve looked it up, I know it’s scary stuff!), but I was incredibly intrigued at the idea of a book based on the concept. The idea of teenagers organizing violent mobs via social media is pretty scary. […]