The renegades introduce a drug called Agent N which is something that will take away someone's powers if it gets into their bloodstream. Agent N is something that is given to the renegades to use on any criminal that they encounter when they are on patrol. No one other than Nova and Adrian seem to even question how right it is that you can do something like this without giving the criminal a fair trial, while Adrian is only really worrying about the judgement of a few renegades Nova doesn't like the renegades having this kind of power since she thinks they have far too much already. Nova doesn't like the renegades using Agent N she doesn't seem to think to badly about the anarchists using it since she ends up looking for a way to make it into weapon to use against the renegades.
In this book we also get more development with Nova and Adrian's romantic relationship as well with the two of them becoming closer to each other but still keeping their distant because of their other personas. Nova is stuck in a conflicting situation with her feeling like it would be better for her mission if she kept away from Adrian since she suspects that she may be developing real feelings for him but she also needs to get close to him in order to use him for her mission as well. Adrian on the other hand despite knowing that he really likes Nova doesn't feel like he can have a relationship with her without telling her he's The Sentinel and since Nova doesn't like his other persona he can't see that as a real option for him.
Overall I really loved this book, it had an interesting plot, world and characters and relationships that I'm really invested in. Please tell me your thoughts about this book or series as whole in the comment section below.