In July 2014 police have released the findings of a nearly four year long review of the Crewe murder case.
The police had admitted making mistakes in their investigation into one of the country's most high profile cases, and 44-years-on, say they still can't identify who killed Jeannette and Harvey Crewe.
Arthur Allan Thomas was twice convicted of murdering the Crewes, but was pardoned and paid nearly a million dollars in compensation, while a Royal Commission later found two police officers planted evidence in the case.
Simon Mercep tallked with Peter Williams QC, who was Mr Thomas' lawyer at the Royal Commission of Inquiry that exonerated him of the murders.
