The first 3 or 4 series were superb, but this current series has gone completely downhill this season. The writing is lazy, the plots are devoid of originality and ideas, and the Dexter character has become some sort of caricature / supehero type character. Instead of slopping about in the shadows, he seems to have turned into some sort of brazen Superman type character. Just ridiculous. They've even hamstrung the Masuka character by not making him make any sexual quips anymore and laugh like Beavis and Butthead. He was easily the most entertaining character but the writers seemed to have neutered him.
This is the most ridiclous plot development in the history of TV:
Spoiler
Debra wanting to shag Dexter
This series has 'jumped the shark'.