Victoria Police are believed to be close to catching the person responsible for the disappearance and likely murders of missing campers Russell Hill and Carol Clay.
In a sign the mysterious killer, or killers, might be operating in the wild on borrowed time, Victorian Homicide Squad detectives will again hit television screens on Sunday to discuss the intriguing case.
Mr Hill, 74, and Ms Clay, 73, who were having a secret affair, haven't been seen since March 2020 when they went camping at the rugged Wonnangatta Valley, in the Victorian Alps.
Russell Hill (pictured, left) had been friendly with Carol Clay (right) for decades before they reportedly had an affair
Police have been dogged in their ongoing investigation, but so far have failed to locate the pair - or any distinct signs of their possible remains
The families of Mr Hill and Mr Clay also visited the destroyed campsite of the couple, revealing their torment at not knowing what happened to the couple
Their disappearance made little more than regional news at the time as Australia was plunged into hard lockdown for the first time amid the Covid-19 pandemic.
Months later, their bizarre disappearance would not stray far from the headlines across Australia as snippets of information trickled in from Victoria Police.
On Sunday, the case will again be cast into the spotlight amid revelations police are 'on the verge of a breakthrough'.
Similar stories have emerged over the past year, with police releasing information on a mysterious 'Button Man', Mr Hill's missing drone, a suspicious white ute seen in the area and the recovery of two shovels.
The shovels had been found in thick bush off the Great Alpine Road on April 14 and brought the search for the missing couple to an abrupt halt.
Police have only just revealed those shovels could not be linked to the pair’s disappearance.
Last month Victoria Police put Mr Hill's daughters, Debbie and Colleen, in front of the cameras to talk to journalists about their missing dad.
Detective Inspector Andrew Stamper said he believed police were still in 'a very good position' to solve the case.
He had a 'theory' - one that he refused to elaborate on.
In an emotional television interview, the sisters said they believed their father to be dead.
'I really don't believe he could be alive, he wouldn't hide,' Debbie said.
'You just hope someone will speak up if they know something to help the situation ... We just want to know what happened and where he is.'
'I feel like there's always that little glimmer of hope he might come back,' Mr Hill's daughter told 60 Minutes
The area is notorious for blood-thirsty hunters illegally killing deer, who often use thermal imaging with their high-powered rifles to shoot at prey from as far away as 800 metres
A new image of Mr Hill's white Toyota Landcruiser. It was found with minor fire damage at their burnt campsite near Dry River Creek Track in the valley on March 21
On Sunday night, Mr Hill's daughters will again put themselves in front of the cameras in the hope 'someone talks'.