In at least 45 prosecutions dating to the 1970s, the lawsuit says, the district attorney’s office possessed evidence that could have helped the accused, but failed to disclose it. In nine of those cases, appeals courts overturned convictions after the evidence was uncovered.
The cases include that of John Thompson, who was awaiting execution when investigators found that prosecutors had withheld the results of a blood test. John Floyd spent 36 years in prison for the murder of a newspaper proofreader before it came to light that someone else’s fingerprints and DNA had been found at the scene. Reginald Adams spent 34 years in prison for the murder of a police officer’s wife, only to be freed after a police report implicating a different man was found buried in unrelated case files.
The Jones lawsuit contends — and legal experts agree — that those 45 cases are likely a fraction of the actual number of instances in which favorable evidence was wrongly concealed. Most, they say, are simply never discovered.