Jonelle Matthews was a vibrant 12-year-old girl who vanished in Greeley, Colorado, on December 20, 1984. After attending a school choir concert, she disappeared while heading home. Her absence sparked a widespread search effort, leading to various tips and theories but no significant breakthroughs at the time. Local law enforcement enlisted the help of the community and even the media to bring attention to her case, which ultimately became one of Colorado's most enduring missing persons mysteries. Over the years, her case remained open, capturing the interest and concern of many in the region and beyond.

As the years passed, the investigation into Jonelle's disappearance faced numerous challenges, including shifting leads and limited technological resources for forensic analysis. Families and volunteers held vigils and search parties, hoping to find answers. Her family endured a painful journey filled with uncertainty and heartbreak. Despite the passage of time, the hope of finding Jonelle never waned.

In a tragic turn of events, Jonelle's remains were discovered on July 23, 2019, in a remote area southeast of Greeley, approximately 15 miles from her home. The Colorado Bureau of Investigation confirmed her identity through DNA testing. The autopsy revealed the cause of death as a gunshot wound to the head, indicating foul play. The discovery provided some closure to a family that had suffered for decades, yet opened new questions regarding the circumstances of her death and the search for justice.