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Climbsstories with Nancy Grace on Sirius XM Triumph channel 132.

This is a murder mystery that has attracted national attention. She was beaten to death with a church as she got ready to teach her workout class inside.

She suffered puncture wounds to the head and chest. Surveillance video shows the suspect dress in police swat gear carrying a hammer.

The killer recorded on surveillance video roaming the halls of the church with a distinctive gate. The family of murder victim, Missy Beaver speaking out.

We need close. Missy's husband Brandon Beaver. I've pretty much exhausted every scenario and every avenue that I can think of of who could have done this.

The couple's marriage was in trouble. Reports of infidelity. Brandon Beaver is cooperating and has not been named a suspect.

A beautiful young mom. Totally dedicated to her little girls and her family. Decised to start an exercise class. A so-called gladiator class. That's for hardcore exercising.

She wanted to make it for other moms and have to get their children to school early in the morning like I do.

In order to do that, I have to get up at 5 o'clock every morning to get everything done. She did, too, except by 5 o'clock in the morning.

She was already at her exercise class setting up for an early morning workout for all those busy moms.

I'm talking about Missy Beaver's who was found, bludgeoned and stabbed dead inside a midlothian church as she was setting up for her gladiator style aerobics class early one morning.

As where I grew up, as people say in the middle of nowhere, who would commit a murder?

In this very extremely rural part of Texas, the case unsolved.

I'm Nancy Grace. This is Crime Stories. Thank you for being with us. To top it all off, so much of it was caught on tape.

Cheryl McCullum, there's a new bombshell right now. But first tell me about these video surveillance that we have seen so many times of the killer strolling around the church just before Missy was bludgeoned and stabbed dead.

Nancy, this killer is walking around the church, taking his time opening doors going in and out of Sunday school rooms, other places literally just taking a tour of the church.

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