It does frustrate me how the people up against Dexter are always disconnected from the world.

I agree, and there was a time several seasons back (I think Season 4) where Dexter did say that maybe he could be free from the Dark Passenger and therefore his urge to kill.

Hannah:  Hey Deb, thank
you for protecting me.

Ghost Harry is just the worst example of a wider problem with dialogue on the show. So many lines are actually stage directions, telling us who people are and what we should be thinking about them.

I think I’ll add my voice to those that complain about the “no long term consequence” nature of Dexter storylines.