As I was adding "It was as if Miles had anticipated how the journal would end", when an idea hit me. What if I made it so that Carson Maddox was more or less the fall guy and Miles was the real mastermind behind all of the murders? Terry and Brian would have just been collateral damage.
A small part of me kinda likes this idea. It would make for one hell of a twist.
The other part is screaming, "NOOOOOOO!!!" Devyn needs a stable partner who is really dedicated to his job and is a genuinely good person. Besides, Miles is too awesome of a character to be a villain. Don't you think?
Just a thought....