Crime Stories With Nancy Grace

Movement in two major cases.  The FBI now conducting advanced analysis on DNA evidence previously collected from Nancy Guthries' home,  including hair samples.   84-year-old Nancy Guthrie, mother of Savannah Guthrie missing 76 days.  We are also hearing that someone may have been detained.  Singer/TikTok star d4vd (David Anthony Burke) arrested on suspicion of murdering 14-year-old Celeste Rivas Hernandez.  He is being held without bail. Celeste's body was discovered of the teen's body in a Tesla registered to him last September.   Attorneys for Burke declare his innocence.   Joining Nancy Grace today:   Brian Fitzgibbons  - Director of Operations for USPA Nationwide Security, website: www.uspasecurity.com, Instagram: @uspa_nationwide_security, former Marine and Iraq war veteran  Tami Ballard -  DNA and Crime Scene Consultant, Crime Scene Investigation and Reconstruction, Former DNA Criminalist for the San Diego Police Dept. Crime Laborato