nor did he know that christopher's friend garret kopp was one of his best clients. >> kopp, it turned buying and sometimes reselling the drug, mostly marijuana and xanax. and he and christopher spent plenty of time sampling the goods. according to the prosecutor. >> it wasn't just drug deals. they hung around a lot. doing drugs, playing video games, whatever. >> in the months after the murder, phone records showed a spike in calls between the two. 300 calls in three months. >> that's an awful lot of drugs to be dealing in three months if you have 300 some odd phone calls. >> could they be talking murder? speculation, of course. but -- then after the murder, when kopp was arrested on the gun charge, prosecutors discovered it was christopher who put up the money to bond him out, even drove him to court. hardly the sort of thing a drug dealer would do for a mere customer. >> going to court with him, bonding him out. there was more to this friendship. >> john and melissa sutton knew nothing of what the police were discovering. christopher and his girlfriend were still living with john. ga