The Power of Six by Pittacus Lore

Number 7 is living in an orphanage in Spain with a Cepan who no longer believes in their mission.  She's miserable, has only one friend, and is obsessed with following a boy named John Smith on the internet. Number 7 is convinced he's one of the Garde. Can she convince her Cepan to come with her to find the others? Will the Mogs find her before she can leave?

I loved the second book in this series! I really like how this one focused on a different member of the Garde. I am already reading the third book, The Rise of Nine!