AN EX-WIFE GUNS DOWN HER FORMER HUSBAND - DID SHE BREAK AFTER BEING ABUSED, OR WAS IT COLD-BLOODED MURDER?

TRACEY GRISSOM SPEAKS OUT IN "48 HOURS: THE GIRL NEXT DOOR"

SATURDAY, NOV. 22, 2014 AT 10:00 PM, ET/PT

Tracey Grissom admits she pumped four bullets into her unarmed ex-husband, Hunter Grissom, in an Alabama parking lot. What is up for debate is why she shot him. She maintains she shot in self-defense after being abused. Prosecutors - and Grissom's family - maintain she killed him in cold blood.

In her only TV interview, Tracey Grissom tells Correspondent Erin Moriarty she doesn't regret pulling the trigger of her handgun on May 15, 2012. "Because if I had not done that, I'd be dead, I believe that 100%," she tells Moriarty on 48 HOURS: "The Girl Next Door," to be broadcast Saturday, Nov. 22 (10:00 PM, ET/PT) on the CBS Television Network.

Tracey Grissom didn't plan on seeing Hunter that day. But, while on her way to work, she noticed her ex-husband's truck, and wanted to snap a picture to prove he was working and should be paying her support. There, she claims, he approached her car, intending to hurt her. She then got out and fired six times - four bullets landing in Hunter.

"He had hurt me," Tracey Grissom says. "He had done a lot of things to me. I didn't want him to be dead. I still don't want him dead."

"My son died running - running for his life," says Hunter's mother, Melanie Garner. "I know there's no telling what went through his mind. But I hear him say, 'Mama, 'Mama.'"

"We all knew she was capable of doing this," says Hunter's aunt, Gina Prisock. "She hunted him down."

Moriarty and 48 HOURS investigate what led up to the shooting, Tracey's subsequent arrest on murder charges, and piece together the couple's story through interviews with Grissom, her attorney, Warren Freeman, her friend Loran Richards, Hunter's mother and aunt, and two of Hunter's employees who witnessed the incident that took one life and wrecked many others. 48 HOURS also interviews Hunter's lawyer who uncovers some damaging information about Tracey.

The shooting of Hunter Grissom was the last twist in the troubled relationship between Hunter and Tracey. They got married in 2004. At the time, she was a divorced with a young son. He was single, and 20 years old. What started out fine, turned bad. Eight months after they eloped, she found him smoking marijuana. She threatened him with divorce. He promised to stop using marijuana and their relationship improved - for a while. Together, they also had a daughter.

Fed up with Hunter's behavior, Tracey filed for divorce in 2010 and then she says he became abusive. She recalls an incident in November 2010 where, after she told him she spent the night at a boyfriend's house, he took her to her bedroom, bound her legs, raped her and then threw her against the bathtub. When she regained consciousness hours later, she went to the hospital. Police were notified and he was arrested.

"And at that point, I feared for my life," Tracey tells Moriarty. "And I feared for my children's life."

Soon after, Hunter stopped paying spousal support and his daughter's expenses, Tracey says.

That led to the day she spotted his truck.

In an extensive interview, Grissom opens up to Moriarty about her relationship with Hunter, the alleged abuse, and her life on trial for murder. 48 HOURS cameras were also there for her drive to visit friends and family before learning her ultimate fate.

"People who think that I murdered him in cold blood either don't know the whole story or don't know everything that's happened," Grissom tells Moriarty. "I'm not somebody that's mean and who would maliciously kill somebody intentionally. And that's what a murderer is. And that's not me."

48 HOURS: "The Girl Next Door" is produced by Chris Young-Ritzen, Susan Mallie, Judy Rybak, Liza Finley and Marc Goldbaum. Al Briganti is the executive editor. Susan Zirinsky is the senior executive producer.

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