SAVANNAH GUTHRIE MOM MISSING: DAY 28

Savannah Guthrie is speaking out again on social media, pleading with someone to "be the  person who brings Nancy Guthrie home." She pointed out in her post that the reward can be anonymous and can be paid in cash. Also, AI - artificial intelligence -  was it used to write two of the ransom notes? And if so, there's a way to track it. Joining Nancy Grace today:  Dave Mack - Investigative Reporter, 'Crime Stories' Heather Barnhart - Digital Forensics Expert with Cellebrite and the SANS Institute (SysAdmin, Audit, Network, and Security), One of the Digital Forensic Investigators in the Bryan Kohberger Case, and Co-Author of "Practical Mobile Forensics" (now in its 4th edition) Todd Shipley - Digital Cyber-Crime Expert, Former Detective Sargent with the Reno, Nevada PD,  Author of: "Surviving a Cyberattack: Securing Social Media and Protecting Your Home" and Author of:  “Investigating Internet Crimes: An Introduction to solving Crimes in Cyberspace;" X: @webcase See omnystudio.com/listener for privacy information.