Episode Details

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: coldcase2004@gmail.com
• 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.

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