For 36 years the heartbroken family of Aberdeen taxi driver George Murdoch have searched in vain to find the person who killed him.
George was well known and respected in his local community, driving locals around for years.
Family described him as "kind and gentle" and always having a smile on his face.
But his life was cut short at the age of 58 after being brutally beaten and strangled outside his taxi in the leafy city suburb of Pitfodels having just picked up a fare.
On the night he died, George radioed into his control room to say he had picked up a customer who wanted to travel from Aberdeen to Peterculter.
Half an hour later witnesses spotted him being attacked on Pitfodels Station Road – more than four miles short of his stated destination.
A police dog handler found George lying in a pool of blood, with severe injuries to his head, face and neck.
Massive searches were carried out following the killing.
The only trace of the killer ever found was a cheesewire found at the scene leading to a decades long manhunt.
However some former cops have questioned how well the searches were conducted.
Despite numerous appeals the murderer has never been found- although George's family is sure information about his death is known to someone.
One police appeal two years ago led to dozens of tips but the information has not led to any convictions.
The family have no idea why George was killed and wife Jessie never recovered from the tragedy.
She died in 2004.
Launching the appeal in 2018, nephew Alex McKay, 61, offered a £10,000 reward for information and said he was hopeful new forensic techniques could lead to a breakthrough.
He said: “Dod was a gentle, likeable and kind-hearted man, usually with a smile on his face.
“He had been made redundant a few years before his death and as he was still a relatively young man in his 50s.
"He became a taxi driver to pay the bills and to take care of his wife and himself."
Alongside the murder of Highland woman Brenda Page, finding the cheese-wire killer is among the longest murder probes in Police Scotland history.
