Julia Lynn Womack was born on July 13, 1968, and was adopted shortly after birth. Her adoptive parents, the Womacks, divorced when she was five years old, and Julia was raised primarily by her mother, Helen Womack. When Helen remarried, Julia had a contentious relationship with her stepfather, D.L. Gregory, which contributed to early emotional instability. As a teenager, Julia began experimenting with drugs and was eventually admitted to a rehabilitation clinic in Atlanta for treatment.

By the early 1990s, Julia had reestablished a steady career as a 911 dispatcher for Cobb County, Georgia, where she met many law enforcement officers through her job. She also aspired to become a police officer, but failed the psychological evaluation necessary for acceptance into the academy. Despite this setback, she remained close to the police community, and her professional demeanor made her appear respectable and composed.

In 1991, she met Cobb County police officer Maurice Glenn Turner, known simply as Glenn, and began pursuing him romantically. They married in August 1992. Glenn was a disciplined and hardworking officer, while Julia handled the household and finances. However, marital friction soon developed—Julia was known for spending beyond their means, and financial strain drove them apart emotionally. By 1995, Glenn was considering divorce.

Unbeknownst to Glenn, Julia had begun an affair with firefighter Randy Thompson, who was stationed in Forsyth County. Their relationship deepened while her marriage crumbled. Glenn remained unaware of her infidelity, but he confided to friends that he was growing ill and planned to move out.

Julia Lynn Turner was involved in the deaths of two men, her husbands, under suspicious circumstances. The first man was Maurice Glenn Turner, who died on March 3, 1995. At the time of his death, he had similar flu-like symptoms and was treated at a hospital. His cause of death was ruled as natural causes due to an irregular heartbeat. After Glenn's death, Lynn collected a significant amount of money from his life insurance and pension.

On January 22, 2001, Lynn's second partner, Randall "Randy" Thompson, also died under similar conditions. He too reported feeling ill before his death. Lynn made him Jell-O the night before he passed away. He had also been treated for flu-like symptoms shortly before his death. His cause of death was also determined to be an irregular heartbeat, leading to further investigation since both men died in nearly identical ways.

Following Randy's death, police reopened the investigation into Glenn's death. Both families found the circumstances troubling. Blood tests revealed that ethylene glycol, a substance found in antifreeze, was present in Randy's system. Authorities later exhumed Glenn's body and found the same chemical in his kidneys. They discovered that Lynn had once asked at an animal shelter about how to euthanize a stray animal using poison. Photos from crime scenes showed antifreeze in Glenn Turner's garage.

On November 1, 2002, Lynn was arrested for the murder of Glenn Turner. In 2004, she was convicted of his murder. She faced another trial in 2007 for the murder of Randy Thompson and was found guilty again. The prosecution argued that she poisoned both men by putting antifreeze into their food. Lynn was sentenced to life in prison without the possibility of parole.

Julia Lynn Turner was found dead in her prison cell on August 30, 2010. Her death was ruled a suicide, reportedly from an overdose of prescription medication.