This is the moment a cold-blooded killer in tactical-gear calmly walked through the hallway of a Texas church before killing a mom-of-three.

A decade later the elusive figure remains at large as police continue to hunt Terri 'Missy' Bevers' murderer. 

Fitness instructor Bevers, 45, was found dead with puncture wounds to her head and chest inside Creekside Church of Christ in Midlothian around 5am on April 18, 2016, as she prepared to lead a Camp Gladiator fitness class.

Surveillance footage captured a suspect wearing what appeared to be police-style tactical gear, including a helmet, vest and gloves, wandering through the church and carrying a hammer, a tool consistent with the injuries Bevers suffered.

The suspect was also seen smashing windows in the building and going through offices, according to the original arrest warrant. 

Despite years of scrutiny and national attention, no arrests have ever been made. In a fresh update marking the 10-year anniversary of the killing, Midlothian Police said the case remains active and ongoing, stressing that investigators are still pursuing leads and leveraging advances in forensic technology. They said no suspects have been ruled out.

Authorities revealed they have received more than 100 tips in the past year alone, with information continuing to pour in from across the US and even overseas.

Police also pushed back on widespread speculation surrounding the case, making clear that no individual has ever been fully cleared.

'While some persons of interest receive more attention than others, no individual has been completely excluded as a suspect,' the department said.

Investigators added that the case is not considered cold and that every credible lead is still being reviewed and cross-referenced.

The mystery surrounding Bevers’ death has deepened over the years. Early search warrants revealed she received a ‘creepy and strange’ LinkedIn message from an unknown man just days before she was killed.

Recovered messages also suggested Bevers and her husband, Brandon, were facing financial strain and marital difficulties, alongside evidence of intimate conversations with others.

Detectives identified one man who admitted messaging Bevers on LinkedIn from January until her death, describing their exchanges as ‘flirtatious and familiar.’ Evidence recovered from both phones showed the interactions were intimate and had been deleted.

Authorities identified multiple persons of interest tied to a series of phone numbers, though none were officially named as suspects.

Investigators also explored whether the killer carried a cellphone during the attack that could have placed them near the church.

At the time, investigators said family members and close contacts were among those initially examined, as is standard in cases where no clear suspect emerges.

But the mother-of-three’s husband said at the time of her murder that his wife’s killer was no stranger and also revealed he spends his days trying to figure out how to make their young daughters feel safe again, People reported in 2016.

‘I think it was a woman,’ he told the magazine. ‘I still think whoever this person was knew my wife and had a motive.’

He also said at the time that he believed that the suspect went to great lengths to stage the scene to look like a robbery gone wrong.

He added: ‘There’s no reason why an individual would break into a church, dressed in that type of clothing and stage a robbery, or what would appear to be a robbery – going through the building, breaking glass and opening doors.

‘If that person was really there to commit a robbery, why did they kill my wife and leave her wedding ring on her finger?’

Adding to the intrigue, Bevers’ father-in-law, Randy was reported to have taken a blood-stained shirt to a dry cleaner just four days after the murder, claiming it came from an injured dog. 

Police later seized the garment, though there was no indication the blood was human.  

Meanwhile, surveillance footage captured a light-colored 2010–2012 Nissan Altima circling a nearby parking lot around 2am on the morning of the killing.

Police said the driver was not necessarily a suspect but described the vehicle as a key lead.

The suspect seen inside the church was estimated to be between 5ft 2in and 5ft 7in and appeared to have a distinctive gait, or way of walking, though authorities have never confirmed whether they think the individual was a man or a woman.

Police have previously said there were signs of forced entry and that the suspect may have attempted to clean up parts of the crime scene.

Investigators have urged the public to continue coming forward.

'We remain fully committed to identifying the person responsible, bringing them to justice, and providing answers to the Bevers family,' the department said.