The heartbroken family of a Sydney man murdered seven years ago say justice will never be served until his killer and accomplice reveal the whereabouts of his remains.
"We are calling on the NSW government to bring in 'no body no parole'," said widow Jennifer Karmas outside the Supreme Court on Thursday after the two men were jailed for their crimes.
"We can't bury him. We don't have have a gravesite to go to."
Builder Elefterios "Terry" Fantakis, 44, was jailed for at least 18 years after being found guilty in May of murdering his neighbour Elisha "Sam" Karmas, 52, whose body has never been found.
Andrew Keith Woods, 41, was jailed for at least six years for being an accessory after the fact of the murder which occurred on August 11, 2011 at a Punchbowl home.
In sentencing them, Justice Helen Wilson found each had "a degree of mental illness" at the time.
She said Fantakis had been unable to accept his twin brother had killed himself in May 2011 and formed the delusional belief that Mr Karmas and his sibling's partner had conspired to murder him.
He believed they wanted to secure his brother's property and claim on his life insurance policy.
Fantakis had developed a strong hatred for Mr Karmas, who had been mediating in the family's financial dispute over the property.
He murdered Mr Karmas "by the violent application of force to his person" before his body was loaded into a van, with the help of his friend Woods, and dumped in the Georges River catchment area near Campbelltown.
The judge was satisfied that a note found in the van, owned by Fantakis, was written by him and referred to concealing the body.
It said: "Wrap in black cotton sheet and tie with black ribbon (shoe lace) tight and through in the river (Georges river)."
Fantakis had testified the note was about "a ritual that a wise woman had recommended to him", an explanation described by the judge as a patent lie.
She observed that Fantakis and Woods appeared to be the only people in the courtroom who were unmoved by the victim impact statements read out by Mr Karmas' family describing their pain and suffering.
"It is a pain that is heightened further because the family have no body to honour and no grave to visit," she said.
"Every news item about the discovery of human remains is a fresh source of anxiety and pain, a fresh prompt to the unwelcome thoughts of what might have happened, and to the flood of grief that follows."
Fantakis received a maximum term of 24 years, while Woods received a maximum of eight years.
Outside court, Ms Karmas said the family was devastated by the sentences, noting Woods could potentially be released on parole next year "without even divulging where my husband's remains are".