This is the first book of a trilogy written by Marie Lu.
June and Day have fifteen years old and they live in the same city, Los Angeles. How ever they live in different worlds because June is a privileged girl destined to take up a place on the elite of her country, but Day lives in secrecy because he thinks that the goverment is corrupt and a killer.
There is no way that their lifes could cross but one day June's brother, Metias, was killed and the first suspect is Day...

What would happend? Is Day the killer? What about June's family, what are they?

Answer this question reading this amazing book.