In this week’s episode of "Zone 7," retired NYPD detective Mike Alcazar joins Sheryl McCollum to talk about what hostage negotiation looks like when a scene is tense, the stakes are high, and one wrong move can change everything.

Drawing on decades in law enforcement, Mike discusses the Nancy Guthrie case, explains how negotiators read people in real time, and highlights the importance of patience, trust, and teamwork.

He also shares stories from the field and looks back on the path that took him from undercover work to hostage negotiation and, later, to the recovery efforts after 9/11.

Highlights:

(0:00) Sheryl McCollum welcomes retired NYPD detective Mike Alcazar to Zone 7

(1:00) Mike’s first reaction to the Nancy Guthrie case and why it struck him as unusual from the beginning

(4:15) Information negotiators look for first: behavior, history, and possible mental-state concerns

(9:00) The challenge of deciding when family can help and when they may make a crisis worse

(13:30) Tension between negotiation and tactical response, and how one decision can undo hours of progress

(19:30) How Mike became a negotiator and what the training process was like

(23:00) A Brooklyn barricade, drone technology, and the friend who helped bring the situation to a peaceful end

(29:45) Why voice, personality, and appearance can shape who a subject chooses to trust

(31:15) How a sandwich from the bodega helped resolve a case

(32:45) Mike looks back on becoming a detective and how 9/11 changed the course of his career

(35:15) Ground Zero, recovery efforts, and the emotional toll officers carried after 9/11

Guest Bio

Mike Alcazar is a retired NYPD detective with more than 30 years of service in law enforcement. During his time with the department, he worked undercover in vice, served as a hostage negotiator, and handled organized crime investigations.

Mike took part in recovery efforts following the September 11 attacks on the World Trade Center and now serves as an adjunct professor at John Jay College of Criminal Justice.

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, in part, 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: [email protected]
• X: @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.

Enjoying Zone 7? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire.

See omnystudio.com/listener for privacy information.

In this week’s episode of "Zone 7," Sheryl McCollum talks with author and investigative reporter Casey Sherman about the murder of his aunt, Mary Sullivan, long believed to be the final victim of the Boston Strangler, and the lasting impact her murder had on his family.

Casey explains why his family has long questioned the official story, pointing to evidence that, in his view, complicates what many people think they know about the case.

Their conversation touches on DNA analysis, missing confession tapes, and alternate suspects that Casey believes raise serious questions about Albert DeSalvo’s role in the murders.

Guest Bio

Casey Sherman is a New York Times bestselling-author and investigative reporter known for revisiting major crimes and historic tragedies.

He is the author of  "A Rose for Mary," which examines the murder of his aunt, Mary Sullivan, and the lingering questions surrounding the Boston Strangler case.

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 case include, in part, The Boston Strangler, Natalie Holloway, and Tupac Shakur. McCollum’s 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: [email protected]

X: @zone7squad

Facebook: @sheryl.mccollum

Instagram: @officialzone7podcast

Enjoying Zone 7? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire.

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 opens with the DNA dispute at the center of the Boston Strangler case

(1:30) Sheryl welcomes Casey Sherman and explains why his work has changed how she views the case

(7:15) Casey explains how Mary Sullivan’s murder shaped his family for generations and why his mother never accepted the official story

(9:15) The missing confession tapes and the details that convinced Casey the official story didn’t hold up

(11:30) Missing evidence, stolen case materials, and the long-term damage they can do to a major investigation

(14:00) The DNA evidence Case says pointed to a prime suspect from 1964 and how that lead eventually took him to a golf course in northern New England

(16:30) Why Casey believes the Boston Strangler case was not the work of one man and that similar killings stretched across multiple states

(19:30) How sensational crime coverage in the 1960s may have helped shape false confessions

(21:15) Casey’s theory that George Nassar may have helped feed DeSalvo information and why DeSalvo was never charged with the murders he confessed to

(24:15) Casey on the pressure surrounding the case and why he believes too many important questions are still unanswered

(27:45) F. Lee Bailey’s role in the case and the unlikely friendship that followed years later

(31:30) The importance of revisiting evidence and challenging the accepted story

See omnystudio.com/listener for privacy information.

After weeks of testimony and a defense case that ended without a single witness, the jury in the Kouri Richins trial returned a guilty verdict in the death of Eric Richins.

In this week’s episode of Zone 7, Sheryl McCollum talks with investigative reporter Nate Eaton, who has been in court following the testimony, key witnesses, and the evidence surrounding Eric's death.

Together, they discuss the prosecution's theory of motive, the evidence tied to money and deception, the Valentine's Day attempted-poisoning allegation, and the courtroom testimony that steadily tightened the case.

Sheryl then provides a final trial update after the verdict, focusing on what the defense did not address and what the guilty verdict implies about the case.

Guest Bio

Nate Eaton is an award-winning journalist, Dateline NBC contributor, and co-founder of EastIdahoNews.com. He is known for his investigative reporting, courtroom coverage, and years of experience covering major criminal cases and breaking news.

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, in part, 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: [email protected]

X: @zone7squad

Facebook: @sheryl.mccollum

Instagram: @officialzone7podcast

Enjoying Zone 7? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire.

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 Nate Eaton for a courtroom-level look at the Kouri Richins trial

(2:30) Why Robert Josh Grossman’s testimony stood out as one of the strangest and most revealing moments in court

(4:00) Eric Richins’ death, the 911 call, and autopsy findings pointing toward fentanyl poisoning

(5:00) Life insurance questions, trust issues, and millions in debt

(7:15) The children’s grief book and why it still leaves people feeling unsettled

(9:15) How testimony from the alleged dealer and the house cleaner helped prosecutors build their fentanyl theory

(10:45) The Valentine's Day sandwich allegation and why prosecutors pointed to it as an earlier attempted poisoning

(13:45) Internet searches about fentanyl, prison, and life insurance payouts add to the prosecution’s theory on intent

(15:00) A forged $250,000 HELOC, hidden financial decisions, and contact with a divorce attorney show a marriage in decline

(21:00) The scope of Kouri’s financial collapse and apparent lack of remorse

(27:45) Money-themed memes found on Kouri’s phone just hours after Eric's death

(30:45) Final update: Sheryl reacts to the finals days of the trial and the guilty verdict

See omnystudio.com/listener for privacy information.

When an 84-year-old woman vanishes from her home in the middle of the night, leaving behind signs of blood and a struggle, every early decision investigators make is critical.

Retired NYPD sergeant Joe Giacalone returns to Zone 7 to talk with Sheryl McCollum about the Nancy Guthrie investigation and the mistakes they believe set the case back from the start.

Together, they walk through the investigative failures, why the ransom note narrative never rang true, and the steps investigators can still take to regain traction.

Guest Bio

Joe Giacalone is a retired NYPD sergeant and former commanding officer of the Bronx Cold Case Squad. He serves as an adjunct professor at John Jay College of Criminal Justice and is the author of, "The Criminal Investigative Function: A Guide for New Investigators and The Cold Case Handbook."

Giacalone also hosts True Crime with the Sarge and is a frequent media commentator on criminal investigations.

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 case include, in part, The Boston Strangler, Natalie Holloway, and Tupac Shakur. McCollum's 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: [email protected]

X: @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.

Enjoying Zone 7? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire

Highlights:

(0:00) Sheryl McCollum introduces Joe Giacalone and frames the Nancy Guthrie investigation as a real-time lesson in investigative breakdowns

(3:30) Why Nancy Guthrie’s case should have been treated as a homicide or kidnapping from day one

(4:15) Why full scene lock down, a command post, and a strict crime scene log should have been prioritized immediately

(5:30) Why uncontrolled foot traffic, outside workers, and a scattered “egg hunt” search approach can create long-term problems for investigators and future prosecution

(7:15) Nancy’s age, health, and the blood evidence on scene make a voluntary disappearance difficult to believe

(9:45) Joe and Sheryl discuss the decision to release the house and why they believe that hurt the case

(12:15) Media management failures, public optics, and the confusion created by inconsistent messaging

(17:00) Proactive steps that could still generate leads and how holding Annie Guthrie’s car fueled unnecessary suspicion

(20:15) The dangers of publicly naming persons of interest too early in an active investigation

(24:00) Morale, leadership, and why command staff should be supplying resources and backing investigators

(38:00) Final message to officials in charge: put aside conflict, align with the FBI, and get the investigation back on track

See omnystudio.com/listener for privacy information.

A late-night stop at a Dairy Queen led to one of the biggest stories of Dale Cardwell’s career.

In this episode of "Zone 7," Sheryl McCollum talks with Dale about the investigation that uncovered corruption inside the DeKalb County Sheriff’s Office, exposed deputies working on the clock for Sidney Dorsey, and helped fuel a political shakeup that ended in the murder of Sheriff-elect Derwin Brown.

Dale shares how the story unfolded, the danger it brought to his own family, and the break that finally helped tie the killing back to Sidney Dorsey.

Guest Bio:

Dale Cardwell is a six-time Emmy Award-winning journalist, consumer investigator, and founder of TrustDALE. He is known for helping expose scams, political corruption, and government waste.

He teamed up with Clark Howard and now hosts Inside Investigations, which airs on more than 100 television markets nationwide.

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 four 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: [email protected]

X: @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.

Enjoying Zone 7? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire.

Highlights:

• (0:00) Sheryl McCollum introduces Dale Cardwell and the Dairy Queen stop that led to one of DeKalb County’s biggest corruption cases
• (1:15) Dale explains the system he built after years of consumer reporting, focused on helping consumers avoid scams
• (3:30) Deputies are accused of clocking in at the jail while working private security for Sheriff Sidney Dorsey
• (6:15) Surveillance, inside sources, and an open-records request lead to the first major break in the story
• (9:30) The reporting lands just before the election and helps shift attention toward challenger Derwin Brown
• (12:30) The corruption picture widens with allegations involving sexual harassment and sex-for-favors allegations, fake badges, and inmate labor
• (15:00) Dale recalls the night police came to his door after Derwin Brown was murdered
• (19:00) Dale learns he is also believed to be on the hit list, and he and his family are placed under protective custody
• (23:30) An interview moment raises new questions about Sidney Dorsey’s knowledge of the conspiracy
• (27:15) A witness’s note on a napkin helps lead investigators back to the murder plot
• (28:30) Patrick Cuffy describes Dorsey giving the kill order on paper, then tearing it up and swallowing it
• (33:30) Dale reflects on the cost of the case and his bond with the Brown family

See omnystudio.com/listener for privacy information.

This episode of Zone 7’s Crime Roundup captures the energy of the first stop on Sheryl McCollum’s 10-8 Tour: a packed house, a hot mic, and the kind of stories you only get when prosecutors, defense attorneys, detectives, and crime-scene folks are all sitting at the same table.

With Joshua Schiffer and Franz Borghardt alongside her, Sheryl recaps an unforgettable night featuring surprise moments, Trial Lawyers College stories, and Nancy Grace taking a rapid-fire stack of audience questions like only she can. Want to be in the room for the next event?

North Carolina is up next on February 28 at Kefi Vineyards & Winery. Grab your tickets here.

Highlights:

• (0:00) Welcome to Zone 7’s Crime Roundup with Sheryl McCollum, Joshua Schiffer, and Franz Borghardt

• (1:30) Dinner and stories at Manuel’s Tavern: packed full room full of energy

• (5:30) A Baton Rouge serial-killer case that kick-started Franz’s career

• (7:30) The “lean into what you’ve got” defense strategy when a club-shooting video is the evidence

• (9:15) Josh frames trial storytelling as emotional truth, clarity, and human stakes over technical brilliance

• (11:30) Trial Lawyers College in Wyoming and Gerry Spence as the foundation for storytelling that translates to true crime

• (19:30) The difference between networking and real respect, and why outcomes are better when lawyers and investigators talk

• (26:00) Sheryl on the CrimeCon glasses moment and the kind of crowd that looks out for you

• (28:30) Sheryl introduces Detective Jarion Shepherd and the Melissa Wolfenbarger connection

• (32:15) Nancy Grace walks in, takes the mic, and flips the room into live-show mode with nonstop Q&A

• (35:15) The 10-8 Tour roadmap, North Carolina on February 28, and the meaning of 10- 8

• (39:45) Sheryl lays down her friendship standard and closes with a true-friends quote

Guest Bio:

Joshua Schiffer is a Veteran trial attorney and one of Southeast's most respected legal voices. He is the founding partner at ChancoSchiffer P .C., where he has litigated high-stakes criminal, civil rights, and personal injury cases for over 2 decades. Schiffer is a frequent media contributor and an outspoken advocate for accountability.

Franz Borghardt is an attorney with more than a decade of experience. Franz has served as both a felony public defender and prosecutor in east Baton Rouge. He maintains a private practice spanning criminal defense, personal injury, family law, and small business matters.

Enjoying Zone 7? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire.

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: [email protected]

• X: @ColdCaseTips

• 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.

https://www.simonandschuster.com/books/Swans-Dont-Swim-in-a-Sewer/Sheryl-MacMcCollum/9798895652824

See omnystudio.com/listener for privacy information.

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: [email protected]

• 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.

Enjoying Zone 7? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire.

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

See omnystudio.com/listener for privacy information.

When a judge declared that Rex Heuermann’s trial would begin after Labor Day “come hell or high water,” the Long Island Serial Killer case entered a decisive new phase.

In this episode of Zone 7, Sheryl McCollum is joined by journalist Laura Ingle for a boots-on-the-ground update of the Long Island Serial Killer investigation. They examine the sweeping defense omnibus motion, the ongoing fight over DNA evidence, and what prosecutors are expected to file ahead of the March 3 and March 17 court dates.

They also analyze the arrest of Andrew Dykes in the 1997 murder of Tanya Jackson, known as “Peaches,” and discuss whether that development introduces meaningful, reasonable doubt for Heuermann’s defense.

From a recovered planning document to burner phones and questions of who knew what, their conversation centers on evidence, legal strategy, and whether this case is headed for trial or moving toward a plea deal.

Guest Bio:

Laura Ingle is an Emmy Award-winning journalist and the host of "The Ingle Edit," a YouTube series and podcast dedicated to re-examining unsolved cases through on-scene reporting and firsthand interviews.

As a longtime network correspondent, she has covered many of America’s most notorious crime stories and continues to champion cold-case investigations.

Learn more about the case and view Laura’s on-scene reporting on The Ingle Edit.

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 four 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: [email protected]

• 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 Laura Ingle and introduces the latest developments in the Long Island Serial Killer case

• (1:00) The Gilgo Beach timeline: from Shannan Gilbert’s 911 call to the initial body discoveries

• (3:15) Memorial benches along Ocean Parkway and what the geographic landscape reveals about the case

• (5:00) Rex Heuermann’s January 13 court appearance and the 175+ page defense omnibus motion

• (8:00) The DNA battle: mitochondrial testing, genetic genealogy, and the hair evidence tied to Sandra Costilla

• (10:30) Judge’s declaration: trial will begin after Labor Day “come hell or high water”

• (11:15) Andrew Dykes arrested in the 1997 murder of Tanya Denise Jackson

(“Peaches”) and what it could mean for the baby

• (15:45) Why there are still no charges in Tatiana Marie Dykes’ death and why her remains’ proximity to Valerie Mack matters

• (20:30) Why separate mother and child: DNA, dumping-ground logic, and what investigators still cannot place in the timeline

• (22:15) Devices, weapons, and the locked vault: what investigators found and what’s still unknown

• (24:15) The house and the basement: searches, “workshop” claims, and the importance of the location

• (25:00) Planning document and surveillance awareness: traffic cameras, tactics, and intent

• (28:15) The “window” theory: family travel timeline and why prosecutors say they line up

• (29:15) Asa and the divorce question: blindsided or strategic?

• (31:30) How the defense uses the “Peaches” arrest to argue reasonable doubt

• (34:00) Outro: The Ingle Edit and Sheryl’s closing quote

See omnystudio.com/listener for privacy information.

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."

Enjoying "Zone 7"? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire.

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: [email protected]

• 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

See omnystudio.com/listener for privacy information.

An active investigation into the death of 14-year-old Celeste Rivas Hernandez has left the public with a timeline, a Tesla, and an extensive list of unanswered questions.

In this episode of "Zone 7," Sheryl McCollum is joined by journalist Lauren Conlin to review what has been said publicly about Celeste’s initial classification as a runaway, her connections to older individuals, and why the continued absence of a named person of interest raises concern.

They also turn to the arrest of actor/director Timothy Busfield and discuss what can and cannot be concluded from selective “evidence” releases, how credibility gets weaponized in public, and why child abuse allegations demand careful, methodical evaluation rather than internet verdicts.

Guest Bio

Lauren Conlin is a New York-based journalist covering true crime and high-profile investigations. She contributes reporting to Los Angeles Magazine, hosts investigative podcasts, and appears as a legal and crime commentator on platforms including Court TV, Fox News, and "Crime Stories with Nancy Grace."

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 includes, in part, the Boston Strangler, Natalie Holloway, 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: [email protected]

• 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.

Enjoying "Zone 7"? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire.

Highlights:

• (0:00) Sheryl McCollum opens the episode on the death of Celeste Hernandez and why the case is “driving her crazy”

• (1:30) Lauren Conlin’s case status framing: no official person of interest, grand jury activity, and what “imminent indictment” does and does not mean

• (3:00) Celeste’s runaway classification, age, and how early labels can shape urgency, resources, and risk

• (7:15) Behavior after the discovery: canceled tour, transferred home ownership, legal strategy, and public silence

• (10:00) Publicity economics: spikes in streams/downloads and the reality of scandal- driven attention

• (15:15) Homicide indicator vs. Evidentiary barriers when decomposition complicates cause-of-death determinations

• (17:45) Tesla cameras, event data, and why Sheryl expects a digital trail around movement and access

• (21:45) Why runaway youth are at elevated risk and how dependency becomes leverage for exploitation

• (27:00) Timothy Busfield: prior allegations and the optics of how he presented himself

• (29:15) The alleged history patterns, witness context, and credibility disputes around the parents

• (33:00) “Tickling to me does not absolve you from being a pervert.”

• (36:00) Predatory access: why being near adults does not guarantee safety and how abuse can occur quickly and covertly

• (39:15) Sheryl and Lauren address recantation, selective interview clips, and why child abuse cases require restraint, context, and patience before judgment

See omnystudio.com/listener for privacy information.

In broad daylight on October 19, 2025, thieves dressed as construction workers targeted the Louvre and vanished with $100 million in royal jewels in about eight minutes.

In this episode of "Zone 7," Sheryl McCollum is joined by former jewel thief Bryan Sobolewski to lay out exactly how a heist like this gets pulled off, what mistakes crews make when the clock is ticking, and why modern forensics can turn a “perfect” job into an evidence trail.

Sobolewski then shares his own history, the losses, and long-term consequences, and why he now speaks publicly to warn others away from choosing a life of crime.

Enjoying "Zone 7"? Leave a rating and review where you listen to podcasts. Your feedback helps others find the show and supports the mission to educate, engage, and inspire.

Guest Bio:

Bryan Sobolewski is a former jewel thief who speaks publicly about robbery methods, prevention, and the real-world consequences of criminal conviction. He has appeared on Fox's reality series "The Snake," and on "America's Most Wanted."

Sobolewski is also a comedian and personal trainer, and previously hosted the "Family Jewels" podcast and authored the book "Family Jewels."

About the Host

Sheryl “Mac” McCollum is an active crime scene investigator for the Metro Atlanta Police Department and the director of the Cold Case Investigative Research Institute, which partners with colleges and universities nationwide.

With more than four 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.

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: [email protected]

• X: @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 recounts the Louvre entry point, the freight truck with extended ladder, missing jewels, and why “construction work” is the perfect disguise in a crowded tourist environment

• (2:45) Sheryl brings in former jewel thief Bryan Sobolewski to talk about the heist

• (4:45) The ladder truck problem: sourcing it, driving it, and the traceability thieves cannot erase

• (7:15) The moped getaway and why Paris geography favors two wheels

• (8:15) Uninsured jewels and what security should have anticipated

• (10:00) How fast cases move when the thieves leave obvious evidence behind

• (12:15) Flight attempts, the hired-crew theory, and how the organizer can remain invisible

• (16:15) DNA, fingerprints, and trace evidence

• (19:15) The gear left behind and why serial numbers and rentals make a heist crew traceable

• (24:00) Bryan’s New England backdrop, mob proximity, and “street rules”

• (27:45) Bryan recounts his father and brother dying on the same night and the questions he is left to live with

• (30:15) Why display cases are harder to break than people think, and how reinforced glass slows thieves down

• (40:30) Bryan reflects on the long-term cost of crime, what accountability looks like after prison,

See omnystudio.com/listener for privacy information.