When 84-year-old Nancy Guthrie disappeared from her home, investigators were quickly faced with blood evidence and ransom claims that did not align with standard abduction patterns. In this episode of "Zone 7," Sheryl McCollum, retired NYPD homicide detectives Dan Murphy and Tom Smith, and forensic pathologist Dr. Priya Banerjee assess why blood at the scene, a prolonged presence inside the home, and Nancy’s medical vulnerabilities undermine the ransom narrative. The panel also examines investigative decisions and evidence handling that may s...
When 84-year-old Nancy Guthrie disappeared from her home, investigators were quickly faced with blood evidence and ransom claims that did not align with standard abduction patterns.
In this episode of "Zone 7," Sheryl McCollum, retired NYPD homicide detectives Dan Murphy and Tom Smith, and forensic pathologist Dr. Priya Banerjee assess why blood at the scene, a prolonged presence inside the home, and Nancy’s medical vulnerabilities undermine the ransom narrative.
The panel also examines investigative decisions and evidence handling that may shape accountability.
For those looking to stay informed as the situation develops, additional coverage and updates can be found on "Crime Stories with Nancy Grace."
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Guest Bios
Dr. Priya Banerjee is a board-certified forensic pathologist with extensive experience in death investigation, clinical forensics, and courtroom testimony. A graduate of Johns Hopkins, she served for over a decade as Rhode Island’s state medical examiner and now runs a private forensic pathology practice.
Dan Murphy is a retired NYPD Detective-Sergeant with extensive experience in homicide, major case investigations, and counterterrorism. During his career, he served in units including the Major Case Squad and the FBI/NYPD Joint Terrorism Task Force. Since retiring from law enforcement, Dan has served as Chief Security officer for U.S. Bancorp, co-authored, "Workplace Safety: Establishing an Effective Violence Prevention Program," and co-hosts the podcast, "Gold Shields."
Tom Smith is a retired NYPD detective and 2024 National Law Enforcement Hall of Fame inductee. 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," lectures on criminal justice and terrorism, 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, including The Boston Strangler, Natalie Holloway, Tupac Shakur, and 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: @149Zone7
• 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.
Highlights:
• (0:00) Sheryl McCollum welcomes listeners, introduces the Nancy Guthrie case, and brings in Dan Murphy, Tom Smith, and Dr. Priya Banerjee
• (1:30) Savannah Guthrie’s early silence and why not using her platform immediately raised concern
• (2:15) Blood at the scene, smashed cameras, and why this should have been treated as an abduction from the start
• (4:15) Interior crime scenes, early release, and how evidence integrity can be compromised
• (4:45) Dr. Priya Banerjee on age, blood thinners, cardiac disease, and stress-related death
• (7:15) The 41-minute timeline inside the home and why it defies kidnapping patterns
• (8:30) Delayed ransom demands, media involvement, and why the timing doesn’t track
• (12:15) Lights left on inside the house and behavior inconsistent with covert abduction
• (13:30) Bitcoin ransom logic and why mixed-payment demands raise red flags
• (14:15) A robbery-gone-wrong scenario and what happens if the victim recognizes the offenders
• (16:15) Chronic pain, medication dependency, and why prolonged captivity is medically unlikely
• (19:00) Family video statements, proof-of-life questions, and linguistics shifts investigators notice
• (21:00) Reactionary law enforcement activity and repeated returns to the scene
• (24:30) Pacemakers, Apple Watch connectivity, and what technology may still reveal
• (28:30) Leadership optics, media interference, and the impact of active investigations
• (36:45) Reward amounts, chain of custody concerns, and courtroom implications
• (41:30) Final thoughts from the panel on recovery efforts, investigative outlook, accountability, and why Sheryl believes it was never about the money
https://www.simonandschuster.com/books/Swans-Dont-Swim-in-a-Sewer/Sheryl-Mac-McCollum/9798895652824
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