he had a girlfriend who went to woodbury high. >> cole is the lead we've been waiting for.ve a drug dealer. we have the connection to the high school. we have the statements up to cole. >> reporter: the next day, 18-year-old cole matenaer was arrested with more than 30 doses of the same drug tara took, ready to be sold. so, he's got more of this stuff. he's peddling it. he's selling it. >> not only does he have more of the stuff, he has more of the stuff knowing that someone has already died in our community. >> reporter: detectives later sat down with cole and his attorney, and cole confirmed what authorities already suspected. he was lying to his clients, telling them the drugs were lsd, because he knew they wouldn't want synthetics. >> because people don't like that stuff. they think it's -- they know it's bad, you know? >> reporter: police were about to find out exactly what killed tara fitzgerald, and discover that it was a problem that went way beyond their quiet suburb. >> coming up -- many synthetic drugs are packaged to seem completely harmless. but -- >> they're n