Marlon Marrache

Sergeant Marlon Marrache recently retired from the Los Angeles Police Department after 24 years of service. He now is focused full time on helping agencies and individual officers understand the internal affair process. According to Marlon, “There is so much more work to be done. We need to teach Supervisors how to investigate IA complaints. We need to teach officers their rights.” He is a co-instructor for our Internal Affairs/Officer-Involved Shooting Investigations course.

Marlon’s 24 years at LAPD included 12 years of Police Misconduct Investigation, adjudication, and examination experience. Much of his experience comes from when Marlon was assigned to Internal Affairs (IA) in a prosecutorial role, representing the Chief of Police conducting Board of Rights, a unique Tribunal Hearing (the only agency with such a process in the nation). The numerous cases he tried involved “False & Misleading” allegations and termination was at issue.

However, Marlon has also been assigned to Officer Representation Section (ORS) defending, representing the rank and file in Skelly Responses and most important, during the administrative process in an OIS or other critical incidents. Marlon ensured IA Investigators were not violating the Peace Officer Bill of Rights Act (POBRA).

Therefore, when Marlon teaches, the students will learn not just how to conduct an Internal Affairs Personnel Complaint Investigation but having the lens from both sides of the table, he will teach students how to complete a very precise well investigated written report from incident to adjudication. As Marlon would say “No stone goes unturned.”

Marlon’s passion for discipline came early in his career when he was preparing cases for Court Marshals & Non-Judiciary Punishment (aka: Captain’s Mast) when he was in active duty in the U.S. Navy back in 1995. After joining the LAPD in July 1998, working as a patrol officer, then promoted to Sergeant in January 2007, his passion was reenergized when he was chosen to work ORS and IA.

Marlon possesses a Juris Doctorate from Pacific Coast University, School of Law and was going to become a full time Police Attorney until he was offered this recent promotion. Meanwhile, Marlon has been retained as a Subject Matter Expert and will continue to share his knowledge with students everything there is to know about IA investigations which he considers a very untapped subject matter.

In 2023, Marlon launched a podcast called Internal Affairs: A Police Podcast. Marlon interviews officers who have been on all sides of an I.A., from investigators to the subject officers themselves. This podcast is the only place you can get a behind the scenes look into what really happened in some well known cases.

To work with Marlon, get registered for our Internal Affairs and Officer Involved Shooting Investigations course.


Internal Affairs: A Police Podcast (Podcast that Marlon hosts)

Podcasts that Marlon has appeared on

Shots Fired Podcast
Failure to Stop Podcast
A Way Forward Podcast

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