In this "Zone 7" special on the disappearance of 84-year-old Nancy Guthrie, Sheryl McCollum and retired NYPD detective Tom Smith break down what a disciplined first 24 hours should have looked like, and why the public-facing story has created confusion. They walk through the biggest unanswered questions, including “unknown male DNA, ” the surveillance video, and why a classic ransom scenario is not tracking. For those looking to catch up further as the situation develops, additional coverage and updates can be found on "
In this "Zone 7" special on the disappearance of 84-year-old Nancy Guthrie, Sheryl McCollum and retired NYPD detective Tom Smith break down what a disciplined first 24 hours should have looked like, and why the public-facing story has created confusion.
They walk through the biggest unanswered questions, including “unknown male DNA, ” the surveillance video, and why a classic ransom scenario is not tracking.
For those looking to catch up further as the situation develops, additional coverage and updates can be found on "Crime Stories with Nancy Grace."
Guest Bio:
Tom Smith is a retired NYPD detective and 2024 National Law Enforcement Hall of Fame inductee. With over 30 years of service, he worked in patrol, narcotics and robbery investigations and spent 17 years working with the FBI/NYPD on the Joint terrorism task Force, including an overseas deployment to Afghanistan.
Tom co-hosts the podcast, "Gold Shields," and provides investigative commentary for national media outlets.
About the Host
Sheryl “Mac” McCollum is an active crime scene investigator for a Metro Atlanta Police Department and the director of the Cold Case Investigative Research Institute, which partners with colleges and universities nationwide. With more than 4 decades of experience, she has worked on thousands of cold cases using her investigative system, The Last 24/361, which integrates evidence, media, and advanced forensic testing.
Her work on high-profile cases include The Boston Strangler, Natalie Holloway, and Tupac Shakur. Her work on the Moore’s Ford Bridge lynching led to her Emmy Award for "CSI: Atlanta" and induction into the National Law Enforcement Hall of Fame in 2023.
Social Links:
• Email: coldcase2004@gmail.com
• Twitter: @zone7squad
• Facebook: @sheryl.mccollum
• Instagram: @officialzone7podcast
Preorder Sheryl’s upcoming book, "Swans Don’t Swim in a Sewer: Lessons in Life,Justice, and Joy from a Forensic Scientist," releasing May 2026 from Simon and Schuster.
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Highlights:
• (0:00) Sheryl McCollum welcomes listeners, introduces the Nancy Guthrie case, and brings in Tom Smith for a Day One and Day Two reality check
• (1:45) First priority: secure the scene, set the perimeter, and control who comes and goes
• (3:15) Two-tape strategy, command center placement, and why media management is part of scene control
• (6:45) Why this case should trigger FBI resources quickly, including scale, reach, and operational support
• (11:15) Family liaison basics: keeping Savannah Guthrie informed without compromising the investigation
• (14:15) Could Savannah be the real target? Why some threats move through family
• (15:00) The man's on-camera behavior stands out: clothing, pacing, props, and missing urgency
• (16:15) “Ransom” is not tracking. The delays, the non-performance, and why this reads as personal
• (21:15) Blood pattern questions that should be treated as a major investigative signal
• (23:30) Unknown male DNA. What “unknown” means, why the recovery location matters, and what should have been clarified early
• (25:00) Geography, logistics, and why certain theories do not fit the known facts
• (27:15) The wagon wheel model. How video, leads, warrants, and tech teams feed one command structure
• (28:00) Crime scene control and the importance of limiting access
• (34:45) “There are things people need to know. If they don’t need to know it, don’t open your mouth.”
• (40:00) Optics blowback. The basketball game controversy and why public trust is an investigative asset.
• (46:30) Threat assessment red flags and what should have been screened
• (54:00) Two fixes that can sharpen the case now: a clean team review and stronger video enhancement
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