Pittacus Lore 
I Am Number Four: The Lost Files: Return to Paradise 

I Am Number Four: The Lost Files: Return To Paradise is the 8th ebook exclusive mini installment in the heartstopping Lorien Legacies series.
After Four leaves town to find the rest of the Garde, Mark is left behind to pick up the pieces. His school has been destroyed, his home burned down, and, worst yet, Mark now knows the horrifying truth: aliens live among us and some of them seek to destroy us. Even with the FBI tailing him and Sarah Hart, Mark tries to return to a normal life. But when Sarah goes missing, he knows he can no longer sit back and do nothing. His quest to find her will lead him to new allies and a startling revelation about the Mogadorians” plan for invasion.
Praise for Pittacus Lore:
”Tense, exciting, full of energy” Observer
”Relentlessly readable” The Times
”Tense, keeps you wondering” Sunday Times
”Set to eclipse Harry Potter and moody vampires. Pittacus Lore is about to become one of the hottest names on the planet” Big Issue
The first book in Pittacus Lore”s Lorien Legacies series, I Am Number Four, is now a major Disney motion picture.