Monsters — James Patrick Kelly

At Coal Hill School, things have started to get public. Kids have become obsessed with a website that demands you perform risky stunts, or tell it your most painful secrets. And Seraphin, everyone's favourite vlogger, wants you to get involved. All in the name of charity. At first people just get hurt. Then their lives are ruined. Finally, they disappear. As April's fragile group of friends starts to fracture, she decides she's going to uncover the truth behind this site herself. Whatever it takes, whoever she hurts, April's going to win. But then, to her horror, she wakes up and finds her whole world's changed. What she does next will astound you.