Quality scenes after a while just don't cut it. I want quality and quantity. I mean honestly, why out of the blue was he the one to interrogate her? He didn't seem to be on the case otherwise prior. I can almost see the writers room. "Oh hey so far there is no Greg in this episode. What scenes can we change to give to him? How about the interrogation scene and maybe toss him in the one scene with DB. That should be enough."