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."