he said he bought the drugs from yet another woodbury high school student, sidney johnson. >> this is even more concerning for law enforcement because we have not made it out of the high school yet. >> who are these kids that we're talking about? >> they're good kids. they've never been in trouble with the law. they've never been in trouble at school. for the majority of them, straight a, honor society, honor roll kids. >> and now they were all in serious trouble. tara's parents were stunned when they heard where the police investigation was going. >> i was like, what the -- are you kidding me? brian orlander this is one who gave this to her. what is going on? how can this be? >> your whole world is being shaken? >> turned upside down. he would be the last person in the world i would have imagined she would have gotten something from. >> responsible kid? >> very responsible, very good influence. >> he is smart kid. >> it was that third student from the high school, sidney johnson, who gave police the next important piece of information. a first name and cell phone number of a local de

. >> it was that third student from the high school, sidney johnson, who gave police the next impnt information name and cell phone number of a local dealer. he had a girlfriend who went to woodbury high. >> cole is the lead we've been waiting for. we have an adult, we have a drug dealer and we have the connection to the high school. we have the statements up to cole. >> the next day, 18-year-old cole 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 pedaling it and selling it. >> not only does he have more of this stuff? he has more of this stuff knowing someone has already died in our community. >> 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. >> people don't like that stuff. they think it's -- they know it's bad, you know. exactly what killed tara fitzgerald and discover it was a problem that went way beyond their quiet suburb. >>> coming up. many synthet