In April 2023, 22-year-old Mercedes Vega was leaving her Tempe, Arizona apartment to meet friends for dinner. The next morning, her body was found burning in a car off the I-10 freeway 60 miles away in the rural desert. Once the autopsy report was released, the details revealed one of the most gruesome murders and causes of death. Now 7 months later, her parents are sitting down for the first time to open up about what they know, the last known surveillance footage of Mercedes, and what the desperately seek as her killer, or killers, still walk free.