A community is in mourning and a young man faces life in prison after a Tennessee jury delivered a guilty verdict in a chilling case of obsessive love turned deadly. William Riley Gaul, 20, was convicted of first-degree murder in the 2016 shooting death of his 16-year-old ex-girlfriend, Emma Walker, as she slept in her family home.
The verdict caps a tragic story that began as a classic high school romance between a popular football player and a spirited cheerleader at Central High School in Knoxville. Friends and family described the pair as inseparable after they began dating in 2014, but the relationship soon spiraled into a pattern of controlling behavior, dramatic breakups, and obsessive contact from Gaul.
Prosecutors painted a picture of a calculated and premeditated killing born of jealousy and rage after Emma finally ended the turbulent relationship for good in November 2016. The court heard how Gaul, then a freshman at Maryville College, staged a bizarre 𝒻𝒶𝓀𝑒 kidnapping just days before the murder in a failed attempt to manipulate Emma.
In the early hours of November 21, 2016, Mark Walker awoke to sounds he believed were in his home. Hours later, his wife, Jill, discovered their daughter unresponsive in her bed. Initial confusion turned to horror when police discovered a small bullet hole in the bedroom wall. Emma had been shot in the head twice through her bedroom window as she slept.
The investigation swiftly focused on Gaul. Cell phone data placed his device traveling from Maryville to Knoxville and near the Walker residence around the time of the murder, contradicting his alibi. His own friends, Noah Richter and Alex McCarty, became key witnesses, telling police Gaul had confessed to taking his grandfather’s gun and asked for help removing fingerprints.
In a daring undercover operation facilitated by Richter and McCarty, who wore wires, detectives captured Gaul on video retrieving the murder weapon and preparing to dispose of it in the Tennessee River. He was arrested at the scene. Black clothing found in his car’s trunk matched the description of a man seen lurking near Emma’s home days earlier.
During the emotional trial, the defense did not dispute Gaul fired the shots. Instead, his attorney argued the act was a “clumsy” and reckless plan to scare Emma into rekindling their relationship, not an intent to 𝓀𝒾𝓁𝓁. They asked the jury to consider a lesser charge of reckless homicide.
The prosecution dismantled that theory, emphasizing the point-blank shot placement through a bedroom wall and Gaul’s calculated actions before and after the crime. They argued his obsessive, possessive behavior and anger over the breakup culminated in a deliberate, premeditated murder.
After deliberation, the jury found William Riley Gaul guilty of first-degree murder, stalking, theft, reckless endangerment, and employing a firearm during a dangerous felony. The first-degree murder conviction in Tennessee carries an automatic life sentence. Gaul was sentenced to life with a minimum of 51 years before parole eligibility.
In a statement to the court, Gaul maintained he never intended physical harm. “I wanted to scare her… so that she would have no choice but to talk to me again,” he said. The judge and jury found his actions constituted premeditated murder. A subsequent motion for acquittal or a new trial was denied.
Emma Walker’s legacy endures through scholarships and community memorials. Her family accepted her high school diploma in her absence in 2018. A dog park and a patient room in the neonatal intensive care unit at East Tennessee Children’s Hospital now bear her name, honoring her love for animals and her dream of becoming a neonatal nurse.
The case stands as a harrowing warning about the potential escalation of dating violence and coercive control. Jill Walker has urged the public to remember her daughter’s kindness and to channel her energy by treating others with compassion and awareness.