Accused killer Greg Lynn claims Carol Clay was shot in head after Russell Hill ... trends now

Elderly camper Carol Clay was shot through the head and killed when her secret lover Russell Hill attempted to grab former Jetstar pilot Greg Lynn's gun, a court has head. 

Gregory Lynn, 55, appeared in the Melbourne Magistrates' Court on Monday charged with the murders of Mr Hill, 74, and Ms Clay, 73.

Forensic expert Mark Gellatly revealed Lynn claims Ms Clay was killed instantly when his shotgun accidentally discharged a round into her head. 

It is the first time any details of how police alleged the murders took place has been publicly revealed. 

The badly burnt remains of the elderly couple were located by Victoria Police Missing Persons Squad detectives on November 30, 2021 - just days after the arrest of Lynn. 

It remains unclear how police allege Mr Hill was murdered by Lynn. 

Lynn's barrister Dermott Dann, QC put it to Mr Gellatly that Mr Hill had grabbed his client's shotgun. 

'The two were wrestling over the gun causing an accidental discharge ... which struck Ms Clay in the head while positioned on the near side of Hill's vehicle,' Mr Dann said. 

'Yes,' Mr Gellatly responded.  ‘It’s a possible explanation at this point.'

The court heard traces of Ms Clay's blood, via DNA analysis, had been found on Mr Hill's Toyota Landcruiser, however many suspected traces had been destroyed by fire. 

On Monday, the court heard the elderly lovers had visited a graveyard in the remote wilderness and buzzed other campers with a drone. 

Weed sprayer Robert Williams told the court he believed he had seen Mr Hill in the wilderness in the days before he was allegedly murdered. 

He described Mr Hill as a 'grumpy old bugger' who later buzzed him with a drone. 

'I was getting droned out,' he later told police. 

Mr Williams said he saw the drone hovering over other people's campsites, which he believed were being filmed. 

Mr Hill had taken a drone with him on the trip, but it has never been found. 

Mr Williams waved as it filmed him and it circled above him several times. 

He watched it as it hovered over and around several campsites for 35 or 40 minutes, before he lost sight of it near Wonnangatta Cemetery. 

He didn't see who was operating it, but thought it was rude.

'You're going down there to have a peaceful camp and somebody's flying a drone over top of you,' he told the court on Monday.

The following morning he smelled burning plastic in the air.

The campers were allegedly shot by Lynn before their bodies were burnt and dumped in bush graves. 

Campers Damir Javor and Goran Miljkovic had seen the couple as they parked their vehicle at a camp site believed to be shared by Lynn. 

Mr Miljkovic told the court he had seen the couple as they drove slowly down a forest track within the Wonnangatta Valley in the Victorian Alps.

'They appeared to be a grandma and grandpa out for a drive,' he said through the aid of a Serbian interpreter.