Donna and Ross arrest a teenager for possession of drugs and Donna realises that he's Chas's son, Aaron. Ross interrogates Aaron over where the drugs came from, but Aaron smartly dodges his questions. Chas turns up to collect Aaron from the police station and Aaron gets off with a caution. Aaron refuses to have anything to do with Chas and legs it out of her car when they stop at traffic lights. (thetvdb.com)