I think I remember Dexter saying he has altered the code, that its his code now, not harrys... which is why he went after that pedophile dude and a couple others...harry said only people who kill other people... dex changed the code to kill people who he believes deserve to die.
Anybody ever think Trinity's killing methods were a tad underwhelming? The brilliance of his character all boils down to the family aspect and psychology of the character. His methods though were not nearly as horrifying as say The Skinner's or as shocking as ITK's. I will give Skinner that much, every time I saw one of his victims I cringed so damn bad.

calm down there chuckles.Lmfao! How could you possibly want them to keep thinking Doakes was the BHB!?!?! Oh yea guys! Don't let the show make any progression whatsoever! Lmao wow man. You seriously have an odd sense of how a story should unfold