This article mentions two movies that are excellent – Hanna and Hard Candy.

Neither one got much publicity by the studio system because they starred young female main characters, but they are both great films.

Hard Candy in particular is a standout, being remarkably effective in being both disturbing and thoughtful at the same time. Many films attempt to make you confused as to who the true villain is. Almost all of them fail. However, Hard Candy succeeds in spades.

Both are highly recommended.