The third installment in the thrilling, action-packed Lorien Legacies series that launched with #1 New York Times bestsellers I Am Number Four and The Power of Six. The stakes are higher than ever as John, Number Six, and Number Seven desperately try to find the rest of the Lorien Nine before it's too late. It all began with nine. Nine aliens who left their home planet of Lorien when it fell under attack by the evil Mogadorians, who scattered on Earth and went into hiding, who look like ordinary teenagers, but who have extraordinary skills. The Mogadorians killed Number One, Number Two, and Number Three. They tried to kill Number Four...and failed.
Number Four (aka John Smith) has now teamed up with Number Nine, while Six has gone off to find the others. With the Mogadorians hot on their trail and time running out, they must find a way to come together before it's too late. Their power is in numbers.