I am Number Four

by Pittacus Lore
Lexile:  700
Genre:  Science Fiction

John and Henri have been on the run for a long time.  Henri, posing as John's father, is actually a guard, charged with keeping John alive.  John is number 4, and is the only hope for the future of his race.  John is actually an alien, shipped to Earth with 8 others, as his planet was being destroyed.  Now, as he and the other 8 gain strength and power, they have become a threat to the evil Mogadorians.  Numbers one, two, and three have been found and eliminated, which means John is next.  All he has left is hope.