I was more horrified knowing that she didn't die peacefully or sleep that her last few

minutes was struggling and trying to breathe. I think about that every night.

My brother and I both started having nightmares.

I would have visions of her and her gown and robe going to a door and someone trying to get in and I would say to her don't open the door.

I would try to save her in my dreams all the time.

That was something that was very hard to hear what he did to them. It was hard to hear those depositions.

And Mary Bartel saying, I knew when I opened that door, I was fixated on those green

gloves. I knew I was in grave danger.

My eyes were just fixated on these green rubber gloves that I saw.

I knew my life was in great danger.

I'm sure that's how my mom felt.

Police across Dallas and Collin counties

are worried they have a serial killer on their hands.

Just days before an alleged serial killer will go to trial.

We're taking a closer look at the murder spree.

Billy Schmermer is accused and suspected of committing.

It includes at least 24 murders and two attempted murders throughout North Texas

beginning in 2016. He would take a pillow and suffocate them. So it was hard for the

medical examiner's office to figure out that there was a pattern that he was

suffocating these elderly women. He was banking on them not doing full-blown

autopsies. I'm not even sure what the real number is. I don't think anybody will ever know one case, but to another to another and then all of a sudden we were pretty blown away and this may be the most prolific serial killer in the history of our state.

Jeffrey Dalmer, Ted Bundy, John Wayne Gacy.

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