Detectives hope a $750,000 reward will lead them to the body of a murdered NSW woman, nearly a year after her boyfriend was convicted over the death.
Johann Morgan, a mother of "great warmth and kindness", vanished from her Tamworth home on the evening of August 9, 2015.
Police arrested her then-boyfriend Troy Jason Ruttley four months later, and in 2017 he was found guilty of murder and jailed for at least 18 years.
But Ms Morgan's body has never been found.
"We have nothing at the moment that will tell us where the body is," Detective Superintendent Fred Trench told reporters in Tamworth on Monday in announcing the hefty reward.
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Finding Ms Morgan's body would close the "final chapter" of the tragic mystery and help bring closure to the family, he said.
"We could all put ourselves in that position, of not knowing.
"It must be heartbreaking."
Ms Morgan, 40, had spent the day drinking with Ruttley and members of her family at the house, according to court documents.
The pair had been in an on-again-off-again relationship over six years, during which Ruttley torched her car and breached an apprehended violence order.
On the day Ms Morgan was murdered, Ruttley had consumed 12 beers and was "charged up" by the time the two were left alone.
An audio recording on his phone captured the pair arguing over how Ruttley's family were "running her down" that night, before a neighbour reported hearing "banging and smashing" coming from the house and everything going quiet.
The NSW Supreme Court heard Ruttley transported Ms Morgan's body to an unknown location, but has never told investigators where he went.
The morning after, Ruttley and a friend drove a white Mitsubishi Magana to a quarry 17km out of Tamworth and torched the car.
Ms Morgan was reported missing by her sister a week later.
Police found "significant" amounts of her blood inside and outside her home.
The court was told Ruttley lied repeatedly to investigators about the car and his relationship with Ms Morgan before he was arrested in December 2015.
He was found guilty in July 2017 and sentenced to 24 years' jail in November.
Her family, in the wake of the verdict, told reporters they'd get closure when they "get her back".
Police are appealing for anyone with information to come forward.
