Woman appeals conviction for arranging ex-boyfriend's woodchipper murder

Sharon Graham is appealing her murder conviction and life sentence. (Supplied)

A Queensland woman has challenged her murder conviction, with her lawyers arguing the verdict was unreasonable.

Sharon Graham was found guilty of planning her ex-boyfriend Bruce Saunders' brutal woodchipper murder in 2017, so she and her accomplices could benefit financially.

The Court of Appeal will now consider Graham's appeal application before handing down their decision in coming months.

A Sunshine Coast grandmother who orchestrated the gruesome murder of her ex-partner, whose body was put through a woodchipper, is trying to overturn her conviction and subsequent life sentence.

Sharon Graham was convicted at a 2023 trial, with a jury accepting she was the mastermind behind a plan to kill 54-year-old Bruce Saunders in a big to get access to almost $1 million worth of his life insurance, superannuation and assets.

Bruce Saunders worked as a butcher on the Sunshine Coast. (Supplied)

On Friday, in the Court of Appeal in Brisbane, lawyers for Graham argued the verdict had been unreasonable and was not supported by the evidence, pointing to the credibility of a key witness.

During her trial, the court heard Graham convinced Gregory Roser, who she had also been in a romantic relationship with, to carry out the murder, along with a third lover, Peter Koenig, on a rural property near Gympie.

At a separate earlier trial, Roser was found guilty of murder, while Koenig pleaded guilty to a lesser charge of being an accessory after the fact to murder in exchange for his testimony at both trials.

Greg Roser and Sharon Graham had been in a romantic relationship. (Supplied: Facebook)

Graham's lawyers argued the jury had heard information at the trial which could have impacted their view on Koenig's credibility.

At the time, questions had been put to Koenig about his then-boss Barry Collins, who ran a trucking business and was also Graham's former long-term partner.

He was questioned about his knowledge of Mr Collins trafficking cannabis interstate, and drugs that were inside a truck Koenig had been driving.

Koenig was told he was able to claim privilege if his answer could incriminate him, which he chose to do.

Graham's lawyers submitted if the jury had heard that information, they may have considered his evidence differently.

Sharon Graham's appeal argument revolved around the Crown's key witness, Peter Koenig. (AAP: Jono Searle)

In response, Justice John Bond pointed out Keonig had previously already admitted involvement in the cover-up of a murder, saying "he was a gru