He's spent the last few days hanging up flyers, hoping they help police catch the suspects.
"Her being my role model, I was angry about it and I want this man to be caught," Wallace said.
The teen is a Person High School sophomore and like the rest of the world watched Carson's case unfold on the news. So touched by the Carolina spirit, Carson's smile and her example, he was moved to act.
"Most of it, I was more upset and angry because of me being a Tar Heel fan and her going to UNC," Wallace explained. "And she was a very well known student at UNC."
Last week the soft spoken and reserved teen grieved Carson's death and raised his voice.
"I like to do stuff in the community and help out as much as I can," Wallace said.
So he created flyers and posted them at convenience stores in Roxboro with Carson's picture, urging people to call police with information.
Randy Young, UNC Public Safety, explained the process at the call center. "A report comes, we assignment it a number and that information is forwarded immediately to the various law enforcement agencies."
So far, detectives have collected more than 200 anonymous tips. Wallace hopes his efforts will bring more.
"I would like to see him brought to justice and whoever else helped him with it," Wallace said.