I've worked a lot of homicides over the last 30 years and this is the first one that I had a set of circumstances as anywhere close to this.

And as law enforcement, our job is to protect people or try to anyway and the fact that we couldn't in this case it's one I'll think

about for a long time yeah it is something that you live with for sure. I'm Scott Weinberger, investigative journalist and former deputy sheriff.

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

And this is anatomy of murder.

Romantic relationships can be exhilarating

and bring out the very best in people when they're open, supportive, and simply

want to make their partner's life better.

Looking at the other side can be difficult and a bit revealing. You're vulnerable, needy, or even controlling

when you wish you just weren't. All things that go straight to the heart and mind

and can impact a person's sense of self-worth, their sense of belief. the And if so, the fangs just might come out.

Today's case delves into a relationship gone wrong.

So wrong, it ended in murder.

But it's not just a simple tale of betrayal.

Investigators found themselves navigating through a web of twist and turns,

each one raising more questions. Who's really to blame?

The events unfolded quickly at times at a dizzying pace leading a veteran homicide

investigator to uncover acts of revenge more volatile than any bad breakup and

more chilling than the coldest rejection.

For today's case, we spoke to Lieutenant Donnie Robbins of the Laramma County Sheriff's

Office in Northern Colorado. He's been in law enforcement for a little over 30 years. Nothing in that

long career prepared him for the call he got early on a Monday morning in February of 2020.

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