The murder occurred on November 29, 1989 in Wichita Falls, Texas. Bass, 42, was surprised by Barnes, who had broken into her home while she was at work, then robbed, beaten, stabbed, and killed by a gunshot to the head. She may have also been raped. Barnes's conviction was based on forensic evidence and witness testimony placing him at the crime scene. His fingerprints were on a bedside lamp that was used to bludgeon Bass, traces of his semen were present at the scene, and two patches of blood on his clothing were confirmed by DNA analysis to have been hers. Prosecution witnesses described seeing Barnes trespassing in Bass's yard about one hour before she returned from work. When arrested, he was in possession of a.32 caliber pistol belonging to Bass. Barnes had a prior record for two robberies. He had been unable to afford his own lawyers and the Wichita CountyPublic Defender's office was not equipped to handle his case, so two local attorneys were appointed for him. Their budget and preparation was minimal, no defense investigation was conducted, and no forensic tests were ordered by the defense. Barnes was convicted by the jury after three hours of deliberation and sentenced to death shortly after.
Appeals process
During Barnes' appeals process, two new attorneys were appointed to his case by a Federal court. European anti-death penalty activists contributed some $16,000 to his defense fund, and the new lawyers paid for forensic tests out of their own pocket. The new defense team uncovered deficiencies in the forensic evidence, serious errors and oversights by the original defense team, and problems with the credibility of prosecution witnesses.
Barnes claimed at trial that he had never had sexual contact, consensual or forced, with Bass. DNA testing some years after the trial showed that the semen on her corpse was his. Barnes then claimed that he and Bass had an existing sexual relationship before the crime but on the advice of his original defense team he did not tell the jury.
At trial, the jury had heard that a brand new lamp was found with Barnes' fingerprints on it. The new defense investigation found that the lamp had not been new, and that Barnes had visited Bass' house after she had bought it.
The bloodstains found on Barnes' clothing, and confirmed by DNA to have been Bass's blood, were very small. This was inconsistent with the extremely violent nature of the killing and the amount of blood found at the scene. Tests revealed that the bloodstains contained an extremely high level of citric acid, which is used as a preservative in crime labs.
The prosecution witness who identified Barnes trespassing at Bass's residence had given inconsistent testimony on different occasions, he described seeing Barnes some 45 minutesafter Bass had already returned home.
International attention
Barnes was executed on March 1, 2000. For his last meal, he requested "Justice, Equality, World Peace". His final statement was:
