This week One Tree Hill is all about guilt, and no one feels it more than Julian. Last week he almost killed his infant son Davis by leaving him in the car in the boiling sun. But he's not the only one with something to feel guilty about. Clay lies to Quinn about his drug problem, Mouth starts to feel bad about being so damn far and Chase has crazy hot monkey sex (10 times in one night) with the absolute worst possible woman. Then there's Dan, who always seems to have a guilty look on his face.