A former forensic lab analyst, whose tests were invoked in a number of convictions, has been partially discredited. Pamela Fish often told the court that her tests were inconclusive rather than exclusionary. Her lab notes indicate that many of her tests were actually exclusionary. This discrepancy played a key role in a number of convictions, but Carl Williams’ legal team is seeking an exoneration, on these grounds, from a 1994 double murder. Williams is currently serving life in prison without parole in a Cook County jail. Read more below: