It’s been nearly four years since Jessica Chambers was burned alive, and the details about her death are still murky. But true crime aficionados will be able to revisit all of the details of the case in Oxygen’s upcoming special, “Unspeakable Crime: The Killing of Jessica Chambers.” Now, in an exclusive interview with Eddie Eidson, a first responder who was at the scene of Jessica’s alleged murder is retelling the gruesome details about the moments before her death.

Eddie, who had only been on the job for about six months at the time, exclusively revealed to In Touch that the evening of Jessica’s had been a regular workday for him. But on Dec. 6, 2014, Jessica was found badly burned in her burning car on Herron Road, just outside Courtland, MS.

“It was just a normal day,” he said. Eddie said that he had gotten a fire call for a house fire earlier that evening. After they settled the house fire, they got back into their vehicle and that’s when the call for Jessica came in and Eddie explained what happened next in detail.

“The way the crime scene was, as soon as you got on one hill you could see the fire, the red lights, and stuff,” he said. “[Fire Chief] Cole Haley called the sheriff’s department and has us requested as back up. There were only three or four other guys there. Cole was dealing with Jessica, and the other firefighters were trying to put out the fire. I remember getting there and they had an army wool blanket. She was shivering like she had a bad cold and I think that’s when her shock set in.”

Jessica was still alive when firefighters and first responders arrived on the scene, but the 19-year-old eventually died at the hospital the following morning. Eddie confirmed that before her death, Jessica was clearly able to tell local law enforcement who did this to her. “She said Eric,” Eddie said, “And then somebody asked her again — she said Eric.”

Be sure to tune in to “Unspeakable Crime: The Killing of Jessica Chambers,” airing on Saturday, Sept. 15 at 7 p.m. EST/PST on Oxygen.