Book excerpt: When Emily Lemon wakes up to a song she's never heard before blasting from her cell phone, she has a weird feeling. But it isn't until she gets to school that she becomes suspicious. Why are the teachers and principal acting strangely? Why is the gym's scoreboard covered with a banner? And why are jumbled letters and numbers running across the computer screens? Emily is worried, so she and her best friend Lewis set out in search of her dad, who is a police officer. But when they get to the mall where he's on patrol, things get even more out of control and Emily starts to wonder if she's in the midst of a technological takeover.