May 6, 2013 is a day that will live with Michelle Knight, 38, forever. It’s the day that her fellow captive, Amanda Berry, 33, made the urgent 911 call that freed the three women from the home of Ariel Castro, who had abducted Michelle, Amanda, and a third woman name Gina DeJesus between the years of 2002 and 2004. Now, years after their escape, the women are sharing their horrifying experiences. Before 20/20‘s latest special, here are five things to know about survivor Michelle Knight.