Nancy Guthrie Case Day 19: CSI Sheryl McCollum on DNA, FBI Coordination & The Role of Public Tips

Day 19 in the search for Nancy Guthrie. Where does the investigation stand? In this one-on-one interview on The Ingle Edit, crime scene investigator Sheryl McCollum, founder of the Cold Case Investigative Research Institute, breaks down the latest developments in the Nancy Guthrie disappearance investigation. We discuss: • The multiple ways DNA testing is being conducted • Why an unknown male DNA profile not hitting in CODIS does not end the case • How CODIS is just one investigative tool • Why media staging near the scene could help and impact perimeter preservation • Whether the FBI, Pima County Sheriff, and the Guthrie family should hold joint press briefings • How public tips have historically helped solve major criminal cases Sheryl explains why the public should think carefully about anything unusual they may have heard — even something that seemed insignificant at the time. Many cases have been solved because someone came forward with a small detail that turned out to be critical. As the FBI and Pima County Sheriff’s Department continue their work, all eyes remain on Tucson. Check out our breakdown of where the case stands on Day 19. Subscribe to The Ingle Edit on YouTube for exclusive interviews and investigative analysis. #NancyGuthrie #NancyGuthrieCase #BreakingNews #TrueCrime #DNATesting CODIS FBI CrimeScene InvestigationUpdate TheIngleEdit Check out Sheryl’s podcast Zone 7 - she just dropped a new episode featuring our recent conversation about the LONG island Serial KillerCase - and be sure to pre-order her new book “Swans Don’t Swim in the Sewer” available May 12. @sheryl_mac_mccollum @officialzone7podcast