Billie does her best to ignore Alyssas jibes at school, but she sometimes wishes that the mean girl would just disappear. Thats exactly what happens when Alyssa snoops in Billies backpack and finds the vanishing powder invented by teen scientist Jody. Suddenly in charge of an invisible enemy, Billie is torn between helping her out of a scary situationor leaving her to suffer alone. Alyssa doesnt make things easy during an excruciating sleepover, especially while trying to jinx a budding friendship between Billie and the new boy, Jean-Pierre. What will it take to put make everything right?Billie is a lively and humorous narrator in this chapter book that balances middle school hierarchy, family secrets, and new friends.
