Stalking is dangerous, heart-stopping, and, in this case, perfectly legal. At least, everyone at Washington High doesn't seem to mind that Savannah Shay is the Secret Stalker they can go to for any question they want answered. In fact, the Secret Stalker is the most notoriously popular student in the whole school. But she's about to meet her match: salutatorian Evan Schultz, determined to find who the valedictorian ahead of him is and do something about it. He doesn't like the Secret Stalker, but he's desperate and willing to use her. What he doesn't know is that he's using the Secret Stalker against the Secret Stalker.

No one knows what happened that night at the party, why Hannah Parks "left early." Hannah doesn't know why she's the sudden target of everyone at school, why all of her friends turned on her. All Hannah knows is suddenly everyone hates her. She also knows that pretty soon, she won't be able to take much more.