as police were learning more about the synthetic drugs that killed two teens in grand forks, north dakota, there was someone in that small city who was somewhat of an expert. andrew spofford, a local drug dealer, who along with marijuana and cocaine was also selling chemicals he bought on the internet. the synthetic drugs that killed christian bjerk and elijah stein came wrapped, stamped, and delivered right to spofford's door. >> he had a fairly good working knowledge of the substances, the potency of the substances, and what dosage units would be common for typical user amounts. >> what spofford didn't know was he was getting ripped off in a crime that would set off a deadly chain of events. one of his customers, adam