The prosecution used clips from 48 Hours as its final piece of evidence in the murder trial of Michele Williams. CultureMap Dallas worked with CBS for the May 3 episode titled “Temptation in Texas.”

The 45-year-old mother of four is accused of shooting and killing her husband, Greg Williams, and wiping down the crime scene with bleach. Although her defense at trial is that Greg committed suicide, she previously told 48 Hours that an intruder killed him.

“Who shot Greg?” CBS correspondent Peter Van Sant asks.

“I have my assumptions, and that person is letting me sit here and take the blame,” Michele says.

Before the clips were played, Greg’s mother, Betty Middlebrooks, took the stand. Her emotionally fraught testimony shed light on Michele’s behavior after Greg’s death.

“She never called. I never heard from her. I kept thinking that I would, but I never did,” Betty said.

It was Michele’s decision to have Greg cremated, Betty said, but Michele didn’t take any steps to plan a funeral. After several weeks passed, Greg’s family held their own service, and Michele did not attend.

Betty wiped away tears when she was asked to identify a picture of her son. She called Greg “a computer genius” and said she was “a proud grandmother.”

The last time she spoke to Greg, Betty said he sounded upbeat about the future. She does not believe he would have committed suicide.

“He seemed very excited about the new house,” Betty said.

Michele and Greg were scheduled to close on their custom-built house the day after he was killed. Subsequent investigation of their mortgage application showed a fraudulent account was used to secure the loan, and prosecutors have argued that Michele killed Greg over money.

Other September 25 testimony focused on autopsy results, with numerous experts saying they believed Greg was shot at a distance between six inches and two feet and that he did not fire the gun himself.

The Tarrant County Medical Examiner ruled Greg’s death a homicide in 2011.

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New to the story? Catch up on the Michele Williams case here:

October 31, 2013: The making of the Keller black widow: Did Michele Williams get away with murder?

January 30, 2014: Keller black widow Michele Williams lands back in Tarrant County jail

February 10, 2014: Michele Williams rejects plea deal and opts for murder trial in husband's death

March 6, 2014: Keller black widow Michele Williams worked at strip club while out on bond

May 2, 2014: Peter Van Sant dishes on what made Michele Williams case so intriguing to 48 Hours

May 15, 2014: Accused murderess Michele Williams gets bond revoked amid fears she'd skip town

May 28, 2014: Couple offers to help post bond for accused murderer Michele Williams

Michele Williams told 48 Hours that an intruder killed her husband.

Photo courtesy of 48 Hours

Michele Williams told 48 Hours that an intruder killed her husband.