COLD case detectives are set to investigate the unsolved murder of a grandmother almost 40 years after she was sexually assaulted and brutally killed.
Annie Irvine, 57, was stabbed to death in August 1974 in an attack that shocked Scotland.
She was found stabbed to death in the bedroom of her tenement flat in Paisley, Renfrewshire, following a sadistic sexual assault in 17 August 1974.
Now, almost four decades later, police are examining the case again in the hope that they will find a vital clue that may have been missed during the original investigation.
It is understood that CID detectives from Paisley are looking over case notes for clues which could give them a fresh lead.
Witnesses who were originally interviewed 38 years ago are also being spoken to again.
And new forensic techniques and updated DNA tests may also be used as cops prove they remain determined to do whatever they can to snare Annie’s killer.
A source said: “Detectives will quite often take a look at unsolved cases in the hope that new techniques or forensics will cast up something that hasn’t been looked at before.
“These things progress so quickly over the years that evidence which did not look crucial in the past may hold the key to a case once a new test or technique has been applied to it.
“Murder cases which are unsolved are never closed and so it is normal procedure to re-examine them periodically to try to track down whoever was responsible.
“In these cases, you have to be careful not to raise people’s hopes but it’s also important that the search for justice continues.”
A spokesman for Strathclyde Police said: “The case has never been officially shut. As a matter of course we periodically review historical murder cases.”