What are the stakes when forensics go wrong? Keith Harward tells his story: he was exonerated by DNA testing, but spent 33 years in prison in Virginia for a murder he did not commit, based on multiple erroneous bite mark comparisons. Peter Neufeld, co-founder and co-director of the Innocence Project joins in the conversation. M. Chris Fabricant, who directs special litigation for the Innocence Project, moderates. Prof. Brandon Garrett introduces the panel.