Talking Dateline: The Butterfly

Andrea Canning talks with Josh Mankiewicz about her episode “The Butterfly.” When 21-year-old art student Katelyn Markham suddenly vanished from her Ohio home in the summer of 2011, her friends and family knew something was terribly wrong. It would take more than a decade for her killer to be arrested. Andrea plays Josh an extra clip from her interview with the investigator who cracked the case. And Mankiewicz & Canning, anyone? Josh and Andrea talk about a potential future business endeavor.