(S04E04) - "You're the one who wanted a challenge ... and now you've batted the beehive." - Harry to Dexter

That quote sums up this season in a blood spattered nutshell and really all of good television, for that matter. How do you reinvent a show that works without completely reinventing the wheel on which it got there?

In Dexter's case, it's giving America's most squeezably soft serial killer an opponent truly worthy of his skills and talent without boring the audience or completely overpowering or outing him. In other words, keep the shark in the cage so you don't even have the inkling of an opportunity to jump over it.