September 19, 2025 – CBI – Wizard Wells, TX – The Jack County Sheriff’s Office and Texas Rangers identified the victim of a homicide which occurred near Wizard Wells, Texas, in 1984 as Roberta “Berta” Mumma. Roberta “Berta” Mumma’s skeletal remains were discovered in a remote area in Jack County over 40 years ago, and her identity remained a mystery until 2024. Roberta “Berta” Mumma was identified using advanced forensic techniques and DNA analysis.
The victim, identified as Roberta “Berta” Mumma, was 25 years old at the time of her death. The Jack County Sheriff’s Office and Texas Rangers are actively investigating this cold case and seeking justice for Roberta “Berta” Mumma. Roberta “Berta” Mumma’s may have been in Colorado specifically Denver and Boulder. The Texas Rangers want to speak with anyone who knew Roberta “Berta” Mumma when she was in Colorado, Tennessee or Texas.
Furthermore, authorities urge anyone with information about Roberta “Berta” Mumma or the circumstances surrounding her death to come forward. The smallest detail could be crucial in solving this case and bringing closure to Roberta “Berta” Mumma’s loved ones.
The Jack County Sheriff’s Office and Texas Rangers are committed to pursuing justice for Roberta “Berta” Mumma and ensuring those responsible for her death are held accountable.
For more information or to provide tips, please contact Texas Ranger Michael Schraub at 940-549-0549 michael.schraub@dps.texas.gov or Jack County Sheriffs Office at 940-567-2161 or chauger@jackcounty.texas.gov
Actual Yearbook Photograph / Age Progression Photo (not actual photo of victim)
Keep in mind hair styles, lengths, colors and complexion may look different.