Storyline: 1/5 
 Characters: 1/5 
 Writing Style: 2/5 
 World: 1/5 
 I wasn't a fan of the first two, but what little this series had going for it collapsed with the incessant, melodramatic adolescent posturing and the ludicrous government conspiracies involving astonishingly incompetent villains. 
 Lessons on bad storytelling organized while reading this conclusion to the trilogy: 
 Trust your readers with recollection. We don't have to be repeatedly reminded of a) how self-righteously independent your characters are b) the grave risk and danger of situations or c) technological details explained and described 100 times previously in the first two books. 
 Characters can exhibit tendencies other than uniformity or polar opposites. That is, it is acceptable for a character to be more than a) a flippant, testosterone-charged body of defensiveness or b) a source of drama because they start behaving exactly the opposite of their prior portrayal. 
 Villains really do have to justify their actions. They can be a) sadistic b) masochistic c) ignorant d) misguided e) greedy f) insane or g) egotistical. Sane villains purposefully engaging in knowingly unethical mass atrocities for the greater good are preposterous. 
 Parlor reveal scenes can be nostalgic or a genre inside-joke but not a serious way to solve a mystery. 
 That whole wallowing in self-pity and self-doubt thing where you agonize over whether or not you made the right decision even though you know you did.....? Yeah, that is something people do for attention because they are insecure. That should not be a source of character depth or drama. 
 Stay far away from (view spoiler)[incest (hide spoiler)].