
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 ... more
| Publishes | Weekly | Episodes | 298 | Founded | 4 years ago |
|---|---|---|---|---|---|
| Number of Listeners | Category | True Crime | |||

In this episode of Zone 7, Sheryl McCollum is joined by board-certified forensic pathologist Dr. Priya Banerjee for a conversation about the ongoing investigation into the death of Nolan Wells. Using publicly known facts of the case, Dr. Priya explai... more
In this episode of Zone 7, Sheryl McCollum is joined by retired Secret Service agent and polygraph examiner Brad Beeler to discuss what 25 years of talking with suspects, witnesses, victims, and some of the worst offenders taught him about getting pe... more
In this episode of Zone 7, Sheryl McCollum is joined by investigative journalist Angeline Hartmann, along with Kevin Verville Sr. and Angelica Ramsey. Together, they revisit the unsolved 1980 kidnapping of newborn Kevin Verville Jr., taken at 17 days... more
In this episode of Zone 7, Sheryl McCollum is joined by retired Las Vegas Police Sergeant Jenn Benjamins for a look inside undercover police work. Jenn explains what separates basic surveillance from true deep cover, where officers must build believa... more
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I have listened to every single episode. My favorite are the ones with Josh.
I feel like I’m sitting on the porch with Sheryl as she and her guest chat about cases. It’s educational, entertaining, personable, and professional when discussing the victims and their families. Truly glad I found this podcast!
Sheryl, your family sounds lovely! Such grounded individuals. Anyway, thanks for a great podcast.
I love this podcast- Mac you are awesome and a true inspiration. Makes me want to become a detective!
The episode with Caroline & Huck is awesome. They are both experts when it comes to this story and it shows. Thank you for sharing these wonderful humans with the world. 3 Macs were better than 1! Please have them on again!
Key themes from listener reviews, highlighting what works and what could be improved about the show.
How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.
Apple Podcasts | #102 | |
Apple Podcasts | #141 | |
Apple Podcasts | #154 | |
Apple Podcasts | #164 | |
Apple Podcasts | #231 | |
Apple Podcasts | #249 |
Recent interactions between the hosts and their guests.
Listeners, social reach, demographics and more for this podcast.
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Zone 7 with Sheryl McCollum features in-depth examinations of cold cases, missing persons, and high-profile investigations through conversations with seasoned professionals and former investigators. Episodes frequently center on investigative techniques, forensic science, courtroom dynamics, and media's role in justice, often anchored by Sheryl's hands-on experience leading cold case work. A notable hallmark is the mission-driven, war-room style approach that blends practical casework with media savvy, veteran advocacy for victims, and a willingness to challenge official narratives when warranted. This mix makes it compelling for listeners who crave rigorous analysis, real-world insights, and a steady stream of high-stakes true crime covera... more
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These podcasts share a similar audience with Zone 7:
1. Body Bags with Joseph Scott Morgan
2. Crime Stories with Nancy Grace
3. The Consult: Real FBI Profilers
4. Murder Sheet
5. Best Case Worst Case
Zone 7 launched 4 years ago and published 298 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.
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Recent guests on Zone 7 include:
1. Kevin Verville Sr.
2. Angelica Ramsey
3. Frank Frederickson
4. Michelle Linn
5. Dan Murphy
6. Caroline McCollum
7. Huck McCollum
8. Ed Newcomer
To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.