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

July 16, 2025 38 mins

Detective Vince Velazquez is a retired Atlanta Police Department homicide investigator with more than 20 years of service. He spent 16 of those years in APD’s elite Homicide Unit, where he helped bring closure to hundreds of families. He’s also the real-life inspiration behind the hit true crime series ATL Homicide. Today, Vince is a speaker, mentor, and advocate for justice who continues to teach, investigate, and figh...

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Sean Houle is a former police officer and K9 handler who served in North Carolina for nearly a decade. In 2021, he was critically wounded in the line of duty—shot twice at point-blank range with his own service weapon. Since medically retiring, Sean has become a sought-after speaker on faith, resilience, and the lifelong commitment to service..

In this unforgettable episode of Zone 7, Crime Scene Investigator Sheryl McCollum ...

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Ray Dawson is a former law enforcement officer and the founder of the Invictus Project, a nonprofit organization supporting task forces investigating online crimes against children by providing funding, training, and technology.

Zachary Neefe is a Special Agent with Homeland Security Investigations and a key member of a multiagency child exploitation task force in North Carolina focused on identifying and arresting child predators.

...

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In this episode of Zone 7, CSI Sheryl McCollum brings together a powerhouse panel to unpack the news that Bryan Kohberger has agreed to plead guilty in the murders of Ethan Chapin, Xana Kernodle, Madison Mogen, and Kaylee Goncalves. Retired NYPD Sergeant Joe Giacalone, journalist Susan Hendricks, and defense attorneys Linda Kenney Baden and Kirk Nurmi break down what this plea deal means for investigators,...

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Chris Enss is a New York Times bestselling author, historian, and private investigator known for her extensive work chronicling the lives of women in the American West. With more than 20 books to her name, she specializes in uncovering the truth behind legends—whether lawmen, gunslingers, or the women often written out of the narrative.

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In this episode of Zone 7, Crime Scene Investigator, Sheryl McCollum, brings together a powerhouse panel including Susan Hendricks, Joshua Schiffer, Dani after Dark, and Kirk Nurmi to break down the second trial of Karen Read, and it’s more than just a courtroom drama. They unpack how the defense pivoted from conspiracy to collision, why the prosecution’s own reenactment may have backfired, and how key testimony created...

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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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In this episode of Zone 7, crime scene investigator Sheryl McCollum sits down with Danny Cupples, a decorated death investigator and Southern crime-fighting legend, to examine one of Tennessee’s most haunting cases.

They retrace the...

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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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Sheryl McCollum

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