The Cloak Society by Jeramey Kraatz

The first in a thrilling, action-packed middle grade trilogy, which School Library Journal declared "will likely find the same wide appeal as Rick Riordan's Percy Jackson books.

The Cloak Society: An elite organization of supervillains graced with extraordinary powers. Ten years ago the Cloak Society was defeated by Sterling City's superheroes, the Rangers of Justice, and vanished without a trace. But the villains have been waiting for the perfect moment to resurface. . . .

Twelve-year-old Alex Knight is a dedicated junior member of Cloak who has spent years mastering his telekinetic superpowers and preparing for the day when Cloak will rise to power again. Cloak is everything he believes in.

But during his debut mission, Alex does the unthinkable: He saves the life of a Junior Ranger of Justice. Even worse . . . she becomes his friend. And the more time he spends with her, the more Alex wonders what, exactly, he's been fighting for.