This year, the Illinois Innocence Project is making its 15th anniversary. In January, the program helped win freedom for Teshome Campbell. He had been convicted of murdering James Shepherd in Champaign back in 1997, and spent more than 18 years in prison.
Brian Mackey talks to the Illinois Innocence Project's executive and legal director, John Hanlon, about changes to the program, choosing cases, and what he calls "junk science” in the courtroom.