There have been developments in the case of Joe B., a former high school principal who was convicted of his wife's 1985 murder based largely upon bloodstain-pattern evidence that has now been discredited. Now 78 and in frail health, Joe is hoping for a new trial.
When it comes to blood-spatter analysis, "expert" witnesses for the prosecution are often law enforcement officers with just a week of training. This was so in the case of Joe B., a high school principal accused of murdering his wife. He was convicted in 1985 based on flecks of blood on a flashlight found in his car, which a detective convinced a jury came from his wife. Now, the Texas Forensic Science Commission has concluded that the analysis was "not accurate or scientifically supported" and, in fact, "entirely wrong."
Keith Tharpe, an African-American, was convicted of a terrible crime. In 1990, a Georgia jury said he had ambushed his wife and sister-in-law while they were driving to work. He murdered the sister-in-law and then kidnapped and raped his wife. The sister-in-law's body was later discovered in a ditch by her own husband.
Halfway into a 20-year sentence for murder, Jennifer Del Prete was released on bond in 2014 after a judge found she had demonstrated her "actual innocence" of the crime she was convicted of. She had been convicted of violently shaking a child in her care at a day care center. That alleged shaking caused so-called "shaken baby syndrome," neurological evidence of abuse. Unfortunately, it appears that the science behind "shaken baby syndrome" is, as the judge put it, "highly suspect."