Elizabeth Ann “Betty” Jirsa Pratt, a 55-year-old female from Tucson, Arizona, whose ethnicity is not specified in available public records, was killed by gunfire while on a desert camping trip with her husband, Harold David “Hal” Pratt. On the night of December 9, 1981, the couple were camped in a remote area of the Arizona desert, roughly 75 miles southeast of Phoenix, in Pinal County.
The following day, December 10, hunters discovered their bodies west of Oracle Junction, and authorities determined that both had been shot, with their deaths recorded as occurring in Pinal, Arizona.
Betty and Hal were long-time Tucson residents who had lived in the area for more than two decades and were known to spend much of their free time outdoors. A memorial biography notes that they enjoyed camping, deer hunting, and hiking in the desert together, and that Betty came from a pioneer family in St. Louis, Missouri. She was described as a talented painter who also created silver jewelry, while Hal worked in production material control for Hughes Aircraft. The couple had decided they wanted to be cremated rather than buried, and their ashes were ultimately scattered along a trail near Ruby, close to the Mexican border—an area that appears to have held personal meaning for them and reflects how deeply the Arizona landscape was woven into their lives.
Initially, the circumstances of the Pratts’ deaths were a mystery. Investigators determined that the pair had been attacked at their campsite late on December 9. Later accounts based on investigative records state that an assailant confronted them at the site, bound their hands with rope, and shot both of them in the head in what was described as an execution-style killing. Their pickup truck was taken from the scene and later found abandoned in Yuma, Arizona, suggesting that the killer used it as a getaway vehicle after the murders. In the weeks that followed, the case remained unsolved, and law enforcement offered a $5,000 reward for information that could lead to an arrest, treating the double homicide as a high-priority investigation due to both its brutality and its apparent randomness.
The break in the case came only after a wider series of murders drew attention to a pattern of killings at campsites and secluded outdoor locations across several Western states. In late 1981 and 1982, a man later identified as Robert Wayne Danielson Jr., a recently paroled felon from Oregon, committed a string of murders in Arizona, Oregon, and California, often targeting people who were camping or spending time in parks. Among his known victims were Arthur E. Gray in Oregon and Benjamin and Edith Shaffer in California, as well as another Arizona victim, Ernest Corral, killed near Apache Junction. Ballistic evidence, similarities in the method of binding victims, and the use and abandonment of stolen vehicles helped investigators link these crimes into a single series.
A key witness was Danielson’s teenage companion, Lenora Hart Johnson, who told investigators that she had traveled with him and described his role as the driving force behind several of the murders. She reported that he had confessed to multiple killings, including those that matched the circumstances of the Pratts’ deaths and the other campsite attacks. As detectives pieced together the trail, Danielson was identified as the prime suspect in the California cases after being seen using the Shaffers’ credit cards, and a multi-state manhunt began.
On April 6, 1984, federal and local authorities located Danielson in Odessa, Texas, where he was working for a traveling carnival. He was arrested there as a fugitive and extradited to face trial, first in California, for the murders of Benjamin and Edith Shaffer. A jury convicted him and, in 1986, sentenced him to death. He was later extradited to Oregon and received a life sentence for the murder of Arthur Gray. Although he does not appear to have been separately tried in Arizona for the killings of Betty and Harold Pratt, multiple law-enforcement and true-crime sources list the Pratts as victims in his confirmed series, and there is no indication in the public record of any alternative suspects once Danielson was linked to the case. Danielson remained on death row at San Quentin State Prison until 1995, when he died by suicide in his cell, effectively closing the possibility of any further direct testimony from the only person ever identified as the perpetrator in the murders of Betty and her husband.
