How 'Serial' shined a light on our troubled justice system

It’s a true crime story that captivated a nation more than 15 years after it happened: Adnan Syed is serving a life sentence after being convicted of the 1999 of killing his high school girlfriend, Hae Min Lee, in Baltimore. William Brangham examines how the podcast “Serial” raised questions about Syed’s defense, and how the case continues to make news.