Isn't the lead character supposed to be somewhat likable?
Or at least have some charisma or some other kind of appeal? Take House for example...he's kind of a jerk. A miserable, misanthropic curmudgeon, but lovable just the same.
This guy, DS Steve Arnott however, is just an obnoxious douche. As far as protagonists go, he's just about the worst choice I've seen in awhile. There is nothing likable about this character what-so-ever and even the actor playing him is annoying.
Shame, because this otherwise seems like a pretty good show.
Wolf
"I Drank What?!" - Socrates