Doerr’s daughter, Lindsey Griffin, told ABC News’ Matt Gutman about her father’s unwavering commitment to supporting his family.

“(He) was my best friend, and now he’ll never get to meet his grandson,” Griffin said.

Doerr also worked full time at a local fast food restaurant on his days off, where he met Elizabeth “Becky” Fox. The two had been friends for 11 years and were married in Panama City, Florida, shortly after deciding to date.

Fox-Doerr recalled in an exclusive interview on “20/20” how her husband treated her like no one had ever treated me before.

But the picturesque romance that was Fox-Doerr’s sixth marriage wasn’t all it seemed, according to Griffin.

“Dad seemed happy at first, but then he started feeling insecure,” Griffin said. “He started to think that she was cheating on him.”

“My understanding is that she was cheated on, but so was I. I tried to reassure her that it wouldn’t happen,” Fox-Doerr said, adding that she had never been unfaithful to Doerr or any of her previous husbands. .

The couple sometimes met Fox-Doerr’s younger sister, Amanda “Mandy” Fillmore, and her fiancé, Larry Richmond Sr. He was going on double dates with.

According to Fillmore, Richmond Sr. He was good looking and attractive but had a dark past. In 1996, the then 17-year-old was convicted of shooting and killing a 70-year-old man, resulting in twenty years behind bars.

Although his past was worrying, Fillmore believed that Richmond Sr. was a changed man.

However, during the investigation of the Doerr case, investigators would eventually find evidence they claimed linked Richmond Sr. to the crime scene.

They discovered Doerr had been struck by two different types of bullets. A search for stolen weapons began in the area, particularly the Taurus Judge model, which can fire both shotgun and pistol ammunition. One such gun had been reported stolen from a pawn shop where, incidentally, Richmond Sr.’s son, Larry Richmond Jr., was working at the time the gun was stolen.

Detectives took the father and son to the police station for questioning. Richmond Sr. said he knew nothing about Doerr’s murder and refused to speak with them further, invoking his right to an attorney.

During interrogation of Richmond Jr., he eventually admitted to investigators: “I don’t know anything about the murder, but I took the gun from my workplace.” Richmond Jr. also revealed that Richmond Sr. had buried a gun in Fillmore’s backyard.

Authorities dug through Fillmore’s yard and found several guns with their serial numbers erased, but they did not find the firearm suspected in Doerr’s death. Richmond Sr. was charged with four counts of felony possession, two due to his felon status and two due to engraved serial numbers. Fillmore told police he was unaware of the guns buried in his yard and did not face any charges.

Meanwhile, suspicions against Fox-Doerr were growing. An initial search of Fox-Doerr’s phone didn’t turn up anything suspicious, but after investigators obtained raw data from her cell phone carrier, they discovered there was a deleted recording of a phone call time-stamped before the 911 call she made to report her husband had been shot. .

According to investigators, the deleted recording showed a call to a person named “Larry Ali.”

Detective Jeff Hands of the Evansville Police Department pressed Fox-Doerr about the phone call she received just 15 minutes before her husband was shot.

Fox-Doerr said that after a 90-minute interrogation, detective Richmond Sr. called her and they spoke just before her husband was shot. Richmond Sr. She denied any alleged affair with Doerr or knowledge of her husband’s murder, and said the search led to Doerr and Richmond Sr. He claimed it was related to an earlier conversation about outdoor lights.

Fox-Doerr was arrested and charged with obstruction of justice for deleting a recording of her initial phone call and lying to investigators when asked about the call. He did not accept the accusations.

Taylor Barrett, one of Fox-Doerr’s sons, said on “20/20” that he witnessed his mother “deleting absolutely everything” from her phone.

Fox-Doerr’s charges were dropped seven months later.

Additionally, Fox-Doerr’s other son, Nathan Guthrie, says he made a discovery while going through condolence cards shortly after Doerr’s funeral. In an interview with investigators, Guthrie reported finding a piece of paper on the card belonging to Fillmore and Richmond Sr. that Richmond Sr. said he gave to Fox-Doerr at the funeral, with the message: “We need to talk,” a phone number and name “Larry” at the bottom. Fox-Doerr denied knowing anything about the message.

A year after Doerr’s murder, the Evansville Police Department announced that Larry Richmond Sr. was a suspect and investigators obtained a search warrant for his cellphone data.

Investigator Jonathan Carter of the Vanderburgh County Prosecutor’s Office said Richmond Sr.’s location data “put him near the scene of the crime approximately 20 minutes before the murder.”

Detectives alleged that Richmond Sr. also checked police scanner apps and Doerr’s social media on the night of the murder.

In August 2022, Richmond Sr. and Fox-Doerr was charged with murder and conspiracy to commit murder. Both denied the accusations.

Fox-Doerr vehemently denied any involvement in her husband’s murder. “I had nothing to do with it,” Fox-Doerr told “20/20.”

“Except for a phone call on February 26, 2019, law enforcement has been unable to obtain any evidence to allege or show that he had any involvement with Becky Fox-Doerr during the five years prior to the date of this hearing,” Fox-Doerr said. defense attorney Rob Phillips told “20/20.”

Ultimately, Fox-Doerr was found guilty of both murder and conspiracy to commit murder. He was sentenced to 90 years in prison.

Larry Richmond Sr.’s trial is scheduled for 2025. When contacted by ABC News for comment, neither Richmond Sr. nor did his lawyer respond.

Fox-Doerr’s conviction was a relief after years of heartbreak for Doerr’s loved ones, but their loss continues.

“I can’t stand the laughter and the talking and saying ‘I love you,'” Griffin said. “Trying to remember tone of voice after five years gets harder and harder with each passing year.”

ABC News’ Joseph Diaz, Chris Kilmer, Abbey LeVine, Emily Moffet and Mike Repplier contributed to this story.