Zone 7 with Sheryl McCollum

Zone 7 with Sheryl McCollum

Work a cold case alongside investigator Sheryl “Mac” McCollum, Director of the Cold Case Investigative Research Institute. Every week, Sheryl dives into her cold case files alongside accomplished guests to look for clues into unsolved murders, missing people, and more. This ain’t just a podcast but a war room. Sheryl opens her cold case files, her heart and her little black book! You will quickly realize Zone 7 is not a place but a lifestyle!

Episodes

June 13, 2025 28 mins

Today Nancy Grace and Sheryl McCollum get personal, powerful, and just a little bit poetic. From a town mourning its unlikely mascot to Nancy’s candid reflections on personal tragedy, the conversation explores how loss, both individual and shared, shapes the pursuit of justice. They examine the impact of victim-centered storytelling, particularly in the upcoming One Night in Idaho docuseries, and how it reframes our understan...

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Danny Cupples is a certified forensic death investigator and Tennessee’s first Chief Death Investigator. He has trained NYC’s elite forensic teams, teaches infant death investigations at MTSU, and serves on a newly formed cold case unit. He's also the co-creator of the life-saving Locator Bulb.

Listeners can learn more about Danny Cupples at The Locator 911, and on Linkedin @DannyCupples  

In this episode of Z...

Today, Nancy Grace and Sheryl McCollum break down the jaw-dropping courtroom antics in Diddy’s case—think nodding at jurors and asking sketch artists to “soften” his look.

 Is he playing the jury or just playing himself? They dive deep into RICO charges, witness intimidation, and public perception, all while pulling back the curtain on what really happens behind the scenes.

Plus, get the latest scoop on...

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In this episode of Zone 7, Crime Scene Investigator, Sheryl McCollum, is joined by pop culture journalist Lauren Conlin, who has been reporting live from the courtroom in the federal investigation into Sean “Diddy” Combs. Lauren brings the latest from the court room as of May 30th, 2025. Sheryl and Lauren unpack incredible testimonies from Cassie Ventura, Kid Cudi, and other key witnesses, painting a disturbing picture ...

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Bonnie Parker and Clyde Barrow were a famous American criminal couple who were part of a gang active in the 1930s. They were known for their bank robberies and murders, and their exploits captured the attention of the public during the Great Depression. They were killed in an ambush by police in 1934. 

Guest Bio and Links:

Rhea Leen Linder is the niece of Bonnie Parker and a living “witness” to the aftermath of one...

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Nancy Grace and Sheryl McCollum tackle the latest in the Diddy and Kohberger cases that are dominating crime news. They confront the haunting question posed to survivors: “Why won’t you just leave?”

Nancy uses her experience prosecuting domestic violence cases to explain the grim calculus that keeps victims trapped, especially when their abuser holds the keys to their future, their finances, or their publi...

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In this episode of Zone 7, Crime Scene Investigator Sheryl McCollum welcomes back Susan Hendricks and Joe Giacalone to break down the second trial of Karen Read— and y’all, it’s a mess.

They explain how John O’Keefe deserved better, pointing to sloppy police work, mishandled evidence, and a justice system in disrepair. They examine courtroom testimony that doesn’t ho...

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A Special Agent with the U.S. Fish and Wildlife Service for over 20 years, Ed worked in Los Angeles and a variety of international posts before retiring in 2022. During his career, he conducted many high-profile international wildlife trafficking investigations involving every continent, including Antarctica, and is known for bringing down some of our planet's most notorious wildlife criminals. He is a recipient of the Humane Law E...

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Today Nancy Grace and Sheryl McCollum dissect the incredible testimony of Cassie Ventura in the case of Sean Diddy Combs. The duo take listeners inside the courtroom, explaining how victim testimony works and why it’s so hard for prosecutors to prove abuse - especially when power, money, and influence are at play. Sheryl explains why Cassie Ventura’s hotel video is a “money tree” for the case - legal gold wh...

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The Connecticut River Valley serial killer is believed to be responsible for a string of brutal murders that occurred between 1978 and 1988 across the wooded border region of New Hampshire and Vermont. The killer targeted at least seven women, many of whom were young and found stabbed to death in remote areas. 

Guest Bio and Links:

Jane Boroski Co-Owner and the Host of Invisible Tears. She is an advocate for mental health, PTS...

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Nancy Grace and Sheryl McCollum dissect the legal complexities and cultural reverberations of the Sean "Diddy" Combs case.

They discuss how media narratives, witness credibility, and the magnetic pull of celebrity can influence a jury’s perception—regardless of the facts. They unpack how victim stories are often distorted or dismissed and explore the deeply personal, often painful reasons many survivors stay silent for ...

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Guest Bio and Links:

Mary Beth O'Connor is a federal administrative law judge and the author of "From Junkie to Judge." She is a writer, speaker, trainer, and recovery advocate. Mary Beth’s journey from addiction to the bench is a powerful story of resilience and triumph over trauma. 

Listeners can learn more about Mary Beth O’Connor at her website, or check out her book: From Junkie to Judge: One Woman's Triumph O...

Podcast Title: 5.02.25 CRU with Nancy Grace: Stabbed 20 Times: Ellen Greenberg’s Case, a Changed Ruling, and Sean Combs Rejected Plea

Today, Nancy Grace and Sheryl McCollum expose what they call one of the most disturbing miscarriages of justice in recent memory. Nancy details the tragic case of Ellen Greenberg, a young teacher found with 20 stab wounds, including 10 in her back; yet authorities labeled her death a suicide.Th...

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Guest Bio and Links:

Victor Hill is the former Sheriff of Clayton County, Georgia, known for his tough-on-crime policies and bold leadership style. Despite facing multiple legal challenges, Hill remains a vocal critic of politicized justice and a passionate advocate for reform within the criminal justice system. He is the author of The Vigilante Sheriff and co-host of a podcast with his brother.

Vigilante Sheriff: The Truth about C...

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Today, Nancy Grace and Sheryl McCollum discuss the tragic death of Ellen Greenberg, a first-grade teacher whose death was ruled a suicide despite evidence pointing to murder.

Grace breaks down major red flags, including troubling forensic details and mistakes made by Philadelphia police. The duo also discuss the Bryan Kohberger case, where the defense plans to use autism as part of its legal strategy and what that could mean for th...

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Guest Bio and Links:

Karla Knight Deese is the elected coroner of Lancaster County, SC, and founder of the first-ever Mounted Response Unit within a coroner’s office. A certified medicolegal death investigator and educator, she’s changed laws, pioneered team-based approaches, and turned rescue horses into federally protected deputies. Karla has proved how “what’s old is new again”.

Connect with Karla K...

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Today Nancy Grace and Sheryl McCollum discuss the recent mass shooting at Florida State University, digging into the motive, the method, and the impact. They dissect the systemic failures, the overlooked warning signs, and the questions you should be asking. 

Show Notes:

  • (0:00) Welcome! Nancy and Sheryl introduce this week’s crime roundup   
  • (0:10) Sherly and Nanc...
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This is a three-part podcast series dedicated to understanding how serial killers form, and how we can stop them before they strike again. Hosted by award-winning crime scene investigator Sheryl McCollum, each episode features a guest expert who brings unique expertise into the psychology, behavior, and patterns of serial offenders.

Guest Bio and Links:

David Quinn is a retired Atlanta Police Department homicide detective and a co-...

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On this episode of "Zone 7," Nancy Grace and Sheryl McCollum discuss the latest developments in the Rex Heuermann and Lori Vallow cases.

 Sheryl checks in live from the Hamptons, describing the quiet tension in a neighborhood trying to move on. She talks about Rex Heuermann’s house, now partially hidden as the family packs up and prepares to leave. Nancy a...

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This is a three-part podcast series dedicated to understanding how serial killers form, and how we can stop them before they strike again. Hosted by award-winning crime scene investigator Sheryl McCollum, each episode features a guest expert who brings unique expertise into the psychology, behavior, and patterns of serial offenders.

Guest Bio and Links:

Phil Chalmers is a 40 year American Criminal Profiler, true crime writer, and h...

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Sheryl McCollum

Sheryl McCollum

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