Wanted / Shepard, Sara

Hanna, Aria, Spencer, and Emily, having drifted apart after their best friend and leader, Alison, disappeared years earlier, find themselves in grave danger when they decide to pursue the truth about what happened to Alison.

When Ali befriends four middle school classmates, she helps them achieve popularity at the price of doing whatever terrible thing Ali wants. Now, three years later, the four girls think they can put the awful experience to rest unless Ali has more in store for them.