Two years before a Gold Coast mother was allegedly murdered by her husband, she told her neighbour to go police if she didn't return from an overseas trip because he would have killed her.
Glenn Ronald Liscombe has testified about that conversation at the trial of John William Chardon, 71, for the murder of his wife Novy Chardon.
Mr Liscombe told the Supreme Court jury Ms Chardon had feared her husband two years before she was last seen on February 6, 2013.
Ms Chandon told him if she didn't return from a trip to the United States it was probably because she had been murdered.
"She said that if she didn't come back from an overseas trip, that John had probably killed her or organised for her to be killed and for me to go to the police if she didn't come back, if I didn't see her," he said on Monday.
She didn't raise that concern with him again after her return.
Last week, the court heard there had been allegations of infidelity on both sides of the relationship.
Ms Chardon fell in love with a younger man when the couple separated in 2012, but was later devastated when he left her, the jury heard.
They were also told that during trips to Southeast Asia, Chardon would have sex with teenage girls and in the US he would sleep with sex workers, only to return to his Gold Coast home to reveal all to his wife.
On Monday, the court was read a statement Ms Chardon's mother gave to police about Chardon having a girlfriend in the Philippines while he was there doing social work.
She said Ms Chardon suspected an affair because Chardon paid for the woman's foot to be amputated after an accident.
"Novy found out that Johnny paid everything for this girl and that she was probably Johnny's girlfriend," the statement said.
The 34-year-old's body has never been found but she hasn't left the country, seen a doctor or used her bank accounts since.
However, the court heard from a witness on Monday who said he saw a woman "identical" to Ms Chardon at Greenmount on the Gold Coast four days after the last known sighting of her.
Mark Lester Clayton said the woman he saw was sitting with a slim "Caucasian" man in his 40s who at one point "mouthed to her he loved her, or something like that".
Later that afternoon, Mr Clayton saw a news report naming Novy Chardon as missing.
Ms Chardon's friend, Kylie Marie Fryer, told the court on Monday the couple had argued over Christmas in 2012, and Ms Chardon had had enough.
"(She was) relieved that she was finally getting things sorted, but scared as to how (Chardon) was going to react," she said.
Ms Fryer said her friend was concerned Chardon would leave her without any money and their two young children.
Australian Associated Press