DNA evidence has been called the gold standard of forensic science — but is the justice system placing too much faith in it?

Adam Shand speaks with Jae Gerhard, one of Australia's leading independent forensic scientists, about the hidden limitations of DNA evidence and what they mean for criminal prosecutions. A former scientist with the Australian Federal Police and NSW Police Force, Jae now works as an expert witness advising defence lawyers on what the DNA in their cases actually tells us — and what it doesn't.

From trace DNA that can travel on a handshake to gloves that become vectors for contamination, Jae reveals how easily evidence can be misread, mishandled, or misrepresented in court. She takes Adam through landmark cases including Farah Jama, who spent sixteen months in prison for a crime he didn't commit — convicted largely on DNA evidence that was never what it appeared to be.