Det. Tom Fassbender, the lead investigator on the team that convicted Steven Avery for the murder of Teresa Halbach, tells Nancy Grace why Avery shouldn't get a new trial. An appeals court has denied Avery's latest motion. Defense lawyer Hunter Shkolnik, forensics expert Joseph Scott Morgan & reporter Leigh Egan join in the discussion about the controversial "Making a Murderer" case. Nancy also explores the mysteries surrounding missing and murdered woman in North Carolina. Crime scene investigator Sheryl McCollum, psycho analyst Dr. Bethany Marshall & reporter Bobbi Maddox discuss these cases.