Crossed: Aly Condie

The second book in the trilogy, which started with Matched. In this book Cassia does find Ky in the outer providence after they both escape from the decoy posts. They come across an abandoned town belonging to the "farmers" and decide where to go from there after finding maps and propaganda from the rebellion. Ky, Cassia, and their new addition "Indy" all join up with the rebellion. In this book we find out Xander is part of the rebellion in town and we begin to believe that the "rebellion" is actually a faction of the government set up for weeding people out. At the end Ky notices that one of the "airships" is damaged and seems to line up with the damage the farmer had mentioned the 12 people who had died on the hill were setting up.