Weeks before Bruce Saunders was found in a woodchipper, Sharon Graham had a premonition about a terrible accident, a court has heard.
Graham, 61, and Gregory Lee Roser, 63, are on trial having pleaded not guilty to murder after Mr Saunders, 54, died while working on a property north of Brisbane in November 2017.
Graham is accused of asking Roser and another man, Peter Koenig, to kill Mr Saunders and make it look like an accident to claim her ex-partner's $750,000 life insurance policy.
Ex-partner Barry Collins said Graham spoke about a premonition weeks before he first heard about Mr Saunders' death on the news.
"She said 'I have had a premonition, there is going to be a terrible accident that someone is going to get hurt'," he told the Brisbane Supreme Court on Monday.
"(Graham said) 'they are going to be clearing a block, clearing some land and there is going to be an accident and someone is going to get hurt'."
The jury has been shown police video and pictures of Mr Saunders' legs protruding from a woodchipper at the Goomboorian property near Gympie after he had been clearing trees with Roser and Koenig.
Mr Collins said during a fishing trip north of Brisbane in August 2017 Graham told him that someone could be taken out in a boat and "not come back".
"She saw the bay and the expanse of it ... she said you could take somebody out ... fishing and they not come back ... they could fall off a boat and not be found," he told the jury.
Mr Collins replied: "Don't be f***ing stupid, I don't want people coming after me".
He also accused Graham and Koenig of assisting him trafficking cannabis interstate and claimed that Graham had tried to blackmail him.
Mr Collins rejected accusations that he provided evidence against Graham to receive a reduced jail term for drug trafficking in NSW District Court in September 2019.
"That is a blatant lie. You well and truly knew that if you could implicate Ms Graham somehow in the murder of Bruce ... you would get a discount on your sentence," Graham's barrister Peter Richards said.
At the trial, Graham has been accused of being in a "love quadrangle" with Roser, Koenig and Mr Saunders, plotting the latter's murder for months.
Mr Collins said Koenig had been a long-term employee for his transport business.
He said when he moved from South Australia to Queensland with then de facto partner Graham, Koenig had come with them and lived on the same property as the couple.
Mr Collins described Koenig as Graham's "close friend".
Before relocating to Queensland, Mr Collins said he had found a handgun that he had forgotten he had owned and gave it to Koenig but never seen it again.
The court heard a "very stressed" Roser visited a fellow resident at a caravan park north of Brisbane in July 2017 and told her that his girlfriend wanted him to shoot and kill her partner.
Joan Balfour said caravan park neighbour Roser told her that he had obtained the small handgun from his girlfriend's "friend".
Ms Balfour said she had never met the girlfriend or knew her name but had seen the blonde woman visit Roser.
She said Roser revealed the gun was in the boot of his car when they met for lunch the next day.
Roser had also told her that the girlfriend had provided an address and times to lay in wait to shoot the partner, she said.
"I just said ... 'don't do it, it's stupid'. Before we had finished the conversation he agreed with me ...and he wasn't going to do it," Ms Balfour said.
The trial before Justice Martin Burns continues.
