The first lie made Lily a savior. The second framed Clara for murder.

If it weren't for Lily, Clara would still be a total outcast, shunned for her role in an incident that gave her a criminal record and ruined another girl's life. She's spent the past two years trying to escape that night, and ever since Lily Dalton befriended her, she's almost succeeded. After all, Lily's the golden girl of the high school—smart, popular, beloved by all—and as her best friend, Clara's now the bright, hard-working chemistry whiz.

But is Lily really just the good-hearted friend who saved Clara from the past? Because lately Lily has been talking about certain classmates and teachers—about wanting revenge. Do you ever think about making them pay? she asks. How would you do it? Lily has to be joking. At least that's what Clara thinks, until she finds a folder that outlines a deadly plan, including detailed steps and a list of targets in their school.

Shockingly, there's even more to Lily's plan, and it has everything to do with Clara. After all, everyone already knows what she did two years ago. Suddenly all the evidence has been turned against her, and there's no way she can prove her innocence. And the people on that list of targets? One after the next, they're meeting terrible fates, and Clara's looking guiltier by the second. It's up to Clara to find the truth and clear her name, before it's too late.