Human trafficking happens everywhere, but it's a crime that is hidden in plain sight.
"I think it would be hard not to find a location in our area that didn't have some form of human trafficking," said Lisa Mercer, a design teacher at the University of North Texas.
For her graduate thesis, Mercer developed an app to help report suspected cases of human trafficking. It's called Operation Compass.
"To me, it's like a way home. You can use a compass to get home," Mercer explained. "I...