Overnight

For Gray, being a member of the Lucky Seven might not be so lucky

They're called the Lucky Seven. The most popular girls in sixth grade, they are the envy of everyone else in the school, and Caitlin Donnelley is their queen. Gray is the shyest member of the group, the most fragile, and the easiest for the others to pick on. Last year, she was nearly ejected from the Seven, and since then nothing has been as important as clinging to her status in the group—not even her mother's ongoing battle with cancer.

Caitlin throws a sleepover for her birthday, and when Gray goes to the kitchen for a glass of juice, she disappears without a trace. To find Gray and keep her alive, the girls will have to put their differences aside and work together. But some of them have secrets they're not telling—and for this particular gang of girls, being nice does not come naturally.