In rural Ohio, friendships and a beautiful girl prove distracting to a fifteen-year-old who has hidden on Earth for ten years waiting to develop the Legacies, or powers, he will need to rejoin the other six surviving Garde members and fight the Mogadorians who destroyed their planet, Lorien.

In a Spanish convent, seventeen-year-old Marina longs to join forces with her fellow Loriens to prepare for battle with the Mogadorians who destroyed their home planet, while in the United States, John, Six, and Sam elude authorities who think John is a terrorist.

Before Number Four, there were One, Two, and Three. Until now we've only known that the Mogadorians caught Number One in Malaysia. Number Two in England. And Number Three in Kenya. But all of that is about to change. . . . In I Am Number Four: The Lost Files: The Fallen Legacies, you'll learn the true story behind these ill-fated members of the Garde. Before they were murdered by the Mogadorians, before Number Four was next, they were all just kids...

You know we're out there, living among you. You know we're waiting for our day to come. You have seen the power of our legacies. You know this is why they hunt us. You may think you know our stories. You are wrong. We each have our own story. We know the time has come to share them with you. Our legacies are your only hope.

After facing off with the Mogadorian ruler and almost being annihilated, the Garde go into hiding. They must learn to master their Legacies and learn to work together as a team. When they receive a sign from Number Five -- a crop circle in the shape of a Loric 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....

In this thrilling 144-page companion novella to the New York Times bestselling I Am Number Four series, learn the fate of Adam-the Mogadorian-turned-ally of the Garde who risked his life to save Sam. Adam helped Sam Goode and his father, Malcolm, escape the Mogadorian base in Dulce, New Mexico. Using the Legacy that One bestowed upon him, Adam sacrificed himself and brought the entire facility crumbling down on his head. Miraculously, Adam survives...

In this explosive one-hundred-page prequel companion novella to the New York Times bestselling I Am Number Four series, uncover the truth behind Number Five's unknown history with the Mogadorians. This sequel to I Am Number Four: The Lost Files: Five's Legacy finds Number Five entering the ranks of the Mogadorian army. The Mogs have convinced him that they will be the victor in their war for Earth, and Five decides he would rather be on the winning...

You know we have been betrayed. You must discover why. You must learn the truth. They have put a plan in motion. They have infiltrated your government. They have already turned some of you. They will do whatever it takes to have your planet. The battle lines have been drawn. Whose side are you on?

In this exhilarating one-hundred-page companion novella to the New York Times bestselling I Am Number Four series, Mark James is on the run-and on the wrong side of the law-but he'll do whatever it takes to save Sarah Hart and help the Garde. A sequel to I Am Number Four: The Lost Files: Return to Paradise, this novella picks up with Mark racing to Dulce, New Mexico, evading capture from both the Mogadorians and the FBI. On the road, his mysterious...

In order to thwart the Mogadorian invasion, a group of the Garde head to a pyramid in Mexico in order to awaken a power that can save the world.