I'm on a large emergency.

Hi, someone just got shot in the parking lot of the Gables Park 17.

It was definitely one of those moments where like, you know, they take the training wheels off the bike.

This was a real big city murder.

I have a job to do and part of my job is going to this young lady's mother and telling her that somebody killed her daughter. I'm Scott Weinberger, investigative journalist and former deputy sheriff.

I'm Anasega Nickelazi, former New York City homicide prosecutor and host of investigation discoveries true conviction.

And this is anatomy of murder. of investigation discoveries true conviction.

And this is anatomy of murder.

Good detectives are many things.

Some of the traits that they share are being

determined, analytical, and possessing an understanding of how humans operate.

The mastermind behind today's case thought that they could out smart everyone and in the process get away with murder

Little did they know the detective that they were up against

Meet Eric Barnes a detective in the Dallas Police Department's homicide unit.

I always tell people whenever they ask about what helped me get to this point in my career and it was working the streets. You know the stuff that you learn

while doing traffic stops working in some of the neighborhoods around Dallas just

learning how to speak the language of the streets.

With over 7.6 million speak the language of the streets.

With over 7.6 million residents in the Dallas-Fort Worth metropolis, there are a lot of different languages to learn.

By the year 2015, Eric had accumulated over a decade of detective experience. In September of that year, he was faced with a case that put everything he knew to the test.

It was the late afternoon of put everything he knew to the test.

It was the late afternoon of September 2nd when a man called 911.

...