Wife supported husband in his pursuit of murder

Glenn Cassidy arrived at his wife's former boyfriend's home armed with a single bullet and a plan.

He fired the gun and killed Michael Caposiena.

Cassidy never stood trial for murder because in the final moments of life, his victim pulled out a knife and fatally stabbed Cassidy.

Cassidy's wife has been convicted by a jury of Mr Caposiena's murder - after prosecutors argued she formed a plan and an agreement with her new husband.

Biannca Edmunds was 29 when Mr Caposiena was shot outside his Westmeadows home in March 2016.

She was not the driving force behind the crime, her barrister Sharon Lacy told the Victorian Supreme Court on Friday.

But it was conceded she knew days earlier what was to take place, after Cassidy told her "you know what I'm going to do when you're away".

As early as December 2015 Cassidy had formed a plan, and put together a to-do list on his phone, including "one bullet" and "getting him alone" as being obstacles to committing murder.

He had ticked off getting married, but the list also included having "a baby or at least be pregnant", and "having as much sex as possible".

Edmunds, now 37, was in Darwin when she became involved in the plan but had plenty of time to stop Cassidy or change his mind but chose not to, the court heard.

Edmunds provided comfort and encouragement to Cassidy, and kept his spirits up as he pursued their agreed goal.

Justice Lex Lasry revealed he was struck by the "matter of fact" way Edmunds had discussed the murder on recorded phone calls.

"I've heard plenty of intercepted phone calls. None of them quite so calm as hers," he said.

In the calls she and Cassidy discussed "work" and a "job" to be done. When it didn't happen one night, Cassidy told her it felt like a waste of time but hopefully someone would be there the next night.

"I hope you do. I want to celebrate. I bought you a present," Edmunds told him.

She also warned him not to "get all funny" after the murder.

"I mean, I know it's a pretty mental job that you're doing but physically and mentally, all that, don't hurt yourself," she said.

Ms Lacy told Justice Lasry he could find she provided support, but couldn't be satisfied had had directed Cassidy on what to do.

During Friday's hearing Mr Caposiena's family spoke of the "evil" crime committed against him.

"I can't remember what it feels like to not be tired and not to grieve," his mother Saccorsa said.

"I wonder at the terror he would have felt when he realised he was in danger. I wish I could have saved him."

His partner Silvana Silva, who was assaulted during the incident, said she lost the chance to start a family with him.

Cassidy and Mr Caposiena had spoken through a security door before the murder but it was unlocked so they could shake hands.

Mr Caposiena was holding a knife to Cassidy's abdomen when the gun, pointed to his head, went off.

Other ammunition and a chicken schnitzel dinner were found in Cassidy's car after the killing. A map of Mr Caposiena's home was found in his pocket.

Edmunds faced trial three times before a unanimous verdict was reached in December 2022.

She'll be sentenced at a later date.