The hit Netflix docuseries "Tiger King" heats up an investigation into what happened to Joe Exotic's intended murder-for-hire victim, Carole Baskin's, husband. Don Lewis disappeared without a trace and now a new investigation has been opened by Sheriff Chad Chronister.Joining Nancy Grace today:Sheriff Chad Chronister - Sheriff of Hillsborough County, FloridaDr Grey Stafford - Author of "ZOOmility: Keeper tales of training with positive reinforcement", host "Zoo Logic" podcastJason Oshins - New York Defense AttorneyBruce Johnson - Owner ISP Investigations-Master Sgt Region One Crime Scene Commander, Chicago Metro Area (Ret)Sheryl McCollum - Forensics Expert & Cold Case Investigative Research Institute FounderDr Bethany Marshall - Psychoanalyst, Beverly HillsMichael Kaplan - New York Post Reporter