Mireia Rué Book order (chronological)

John Smith, known as Number Four, has the power to eliminate the leader of the Mogodorians but needs all who have Legacies to form an army for a final showdown

The sixth and penultimate book in the New York Times bestselling I Am Number Four series! For years the Garde have fought the Mogadorians in secret. Now all of that has changed. The invasion has begun. John is on the front lines of the fight in New York City. And just as the odds seem stacked against him, his best friend, Sam, a human, inexplicably develops a Legacy—and Sam isn't the only one. While the pair try to track down Five and Nine amid the chaos, they encounter another teen who can wield abilities that were once only meant for the Garde. Whether she is a friend or a foe, however, remains to be seen. Meanwhile, Six, Marina, and Adam are trapped in Mexico. They fought their way into the Sanctuary and were able to awaken the power hidden within, but their preceding battle has left them without any way to reach the others. The Mogs are returning in full force, and it will take a miracle to escape. The Garde are stretched thin, fighting this war on many fronts. The only chance they have is to take out the Mogadorian leader once and for all—but his fate is now irrevocably tied with Ella's. They can't destroy one without the other. But if the Garde can't find another way to stop the Mogs, humanity will suffer the same fate as the Loric: annihilation.

The Fall of Five is the fourth novel in the New York Times bestselling I Am Number Four series by Pittacus Lore. The Garde are finally reunited, but do they have what it takes to win the war against the Mogadorians? John Smith—Number Four—thought that things would change once the Garde found one another. But he was wrong. After facing off with the Mogadorian ruler and almost being annihilated, the Garde know they are drastically unprepared. Now they're hiding out in Nine's Chicago penthouse, trying to figure out their next move. The six of them are powerful, but they're not strong enough yet to take on an entire army—even with the return of an old ally. To defeat their enemy, the Garde must master their Legacies and learn to work together as a team. More important, they'll have to discover the truth about the Elders and their plan for the Loric survivors. And when the Garde receive a sign from Number Five—a crop circle in the shape of a Lorien symbol—they know they are close to being reunited. But could it be a trap? Time is running out, and the only thing they know for certain is that they have to get to Five before it's too late.