I Am Number 4

This is a GREAT book. I read it just before I saw the movie, and I can say, it is definitely better, even though the movie was pretty good.
This book is about number 4, an alien from a life sustaining planet (similar to Earth) called Lorien. When he was small, a planet called Mogadore invaded Lorien, and 9 children like number 4 were sent down to Earth, in hope that in a few years, they would be able to go back to their home planet and protect it.
The story starts when number three was murdered by the Mogadorians. According to the charm that protects the 9 Loriens, they can only be killed in order. Numbers 1, 2 and 3 were killed, and number 4 is next. After each one is killed, the other Loriens receive a scar in the shape of a circle, notifying them that another of their kind has been murdered. When number four is in Florida, he gets his 3rd scar.
After this, he has to move, otherwise, the Mogadorians will track him down. His next stop is Paradise, Ohio. Here, he creates a new identity for himself, John Smith. At school, he meets a girl called Sarah Hart, who he thinks is cute. After a while, he develops a relationship with her, and they become really close. John also makes friends with a boy in his school called Sam Goode. Sam's dad is believed to have been abducted by aliens, so he believes in 'extra terrestrial activities'.
After a while, the moagdorians find out where John is located, and the war starts. Will he be able to survive and protect his friends? I highly recommend this book!