The lack of Greg out in the field was disappointing. At first he just showed up, but I don't know what the heck he did after that. And the Greg/Nick/Sara moment was one that I like. Greg was like their parent instead of the other way around. Like the student becomes the mastah! I would also love to see Greg have an argument; It's usually Nick, Sara, Catherine,and Jim I see arguing. Give Greg someone, preferrably a colleague, to argue with. Not another suspect or suspect's family member he somehow wronged, and also not with Greg whining that he doesn't wanna do a trash run. Just something serious that can go on for more than one episode, like Jim with Catherine in Shock Waves.