Share and Follow
The disappearance of 84-year-old Nancy Guthrie has left investigators puzzled, as they encountered blood evidence and ransom demands that defied typical kidnapping scenarios.
In the latest episode of “Zone 7,” host Sheryl McCollum teams up with retired NYPD homicide detectives Dan Murphy and Tom Smith, alongside forensic pathologist Dr. Priya Banerjee. Together, they delve into how the presence of blood at the scene, an extended period spent inside Guthrie’s home, and her health issues cast doubt on the ransom narrative.
The discussion also turns to the critical choices made by investigators and how evidence handling could influence the pursuit of justice.
Stay updated on this unfolding case with further insights from “Crime Stories with Nancy Grace.”
If you’re a fan of Zone 7, consider leaving a rating and review wherever you listen to podcasts. Your feedback not only helps others discover the show but also furthers the mission to educate, engage, and inspire listeners.
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.
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
[Feature Photo: FBI]