Tonight…. Startling claims surrounding key forensic evidence in some of South Australia's most controversial and notorious murder investigations.
Bungled evidence that just might have sent innocent people to jail - while those that were actually guilty - went free.
At question the work of one man who for decades was primarily responsible for the bulk of the State's most sensitive and vital forensic investigations.
Experts who have contacted Today Tonight are firmly of the opinion - Adelaide's former Chief Forensic Pathologist Dr Colin Mannock - got it wrong - not a little - but a lot.
Here's Rohan Wenn with a special investigation.