The Lorien Legacies. Book 3, The Rise of Nine

In Pittacus Lore's The Rise of Nine, third in the New York Times bestselling I Am Number Four series, the stakes are higher than ever as John, Six, and Seven try desperately to find the rest of the Garde before it's too late. The Mogadorians who destroyed the planet Lorien continue to hunt down the Garde, the small group of Loric survivors who have taken refuge on Earth. The Garde must come together.
They are Lorien and Earth's only hope. During the dangerous mission at the Mogadorian base in West Virginia, John found and rescued Nine. But even with their combined powers, special abilities known as Legacies, the pair barely escaped with their lives-and they lost Sam in the process. In order to save our world and their own, John and Nine must join forces with Six and Seven who have been battling the Mogadorians in Spain, and who are now trying to locate Number Eight in India. Power in numbers will save us all.
Six are left. But they won't survive alone. Multiple POVs: Experience the global hunt from two perspectives: Number Four in America and Number Six in Spain, each fighting their own battles. Alien Superpowers: As the Garde learn to control their developing Legacies-from telekinesis to invisibility-their powers are the only thing standing between them and annihilation. Reluctant Allies: After a daring rescue mission leaves their friend Sam captured, John and the reckless Number Nine must forge a tense alliance to survive.
A Global Hunt: The race to unite the last of the Loric survivors is on, with a desperate search for Number Eight stretching from the streets of Spain to the mountains of India.