Moments after fatally stabbing a woman 21 times, a butcher with a knife fixation posted lyrics from a heavy metal band to Facebook, a court has heard.
In an industrial area of Doveton on an April night three years ago, Christian Bain-Singh stayed near Rani Featherston's body to post lyrics from Five Finger Death Punch's song, Dot Your Eyes.
The post included the song lines: "It's not the size of the dog in the fight / It's the size of the fight in the dog".
Regardless of Bain-Singh's intention in posting the lyrics, the fight was not a fair one.
He was 21, armed with a knife and proficient at using them. He was a butcher, had a collection of blades at home and was constantly handling them, even when reading.
Ms Featherston was 34, unarmed and possibly affected by alcohol and the drug ice.
But, the Supreme Court heard on Monday, Bain-Singh claimed he felt threatened by what Ms Featherston said, about a time the pair crossed paths five months earlier.
Defence counsel Nadia Kaddeche told the court the pair exchanged words in the early hours of April 2, 2014, and that Ms Featherston called Bain-Singh a "dog" and told him she knew he'd reported her to police previously for upsetting his dogs.
"She said she was going to get me," Bain-Singh later told homicide detectives.
"I just pulled out a knife and stabbed her."
Bain-Singh stabbed Ms Featherston 21 times in the face, chest, back and neck and left her body, where it was discovered by factory workers about five hours later. She was stabbed about 500 metres from her home.
Prosecutor Anne Hassan said Ms Featherston was often seen drunk around Doveton and was known to verbally abuse people in the street, but was considered harmless.
Five months before her death, Ms Featherston walked past Bain-Singh's home and ran her hand over the fence, causing the dogs to bark, Ms Hassan said.
Ms Featherston said at the time she would jump the fence to get at the dogs, but was not violent.
In March last year, as detectives investigated the murder, Bain-Singh called his former partner and told her to remember that Ms Featherston had threatened to stab them over the incident involving their dogs.
Ms Hassan said there was no evidence to back this.
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Bain-Singh also told his ex that around the time of the murder, he was working for a butcher in Pakenham, when really he was unemployed.
Ms Hassan said Bain-Singh later confided to an undercover policeman he constructed an alibi about being asleep in preparation for work.
The reality was Bain-Singh's world had broken down.
Ms Kaddeche said by March 2014, her client was unemployed, had broken up from his partner, was struggling to pay rent and was addicted to cannabis.
Eleven days before the murder, he broke into a Doveton house and attacked Daniel Maynard in his bed.
Mr Maynard suffered a fractured skull, lacerations across his body and a deep stab wound to his left hand, which surgeons had to partially amputate.
Mr Maynard, 55, told the court the attack left him with 10 per cent use of his left hand.
The two attacks were unrelated, the court heard.
Bain-Singh, now 24, pleaded guilty to Ms Featherston's murder, intentionally causing serious injury and aggravated burglary.
Ms Featherston's devastated brothers told the court their sister's death had caused all-consuming grief and shattered their lives.
Their broken-hearted mother died from illness about a year afterwards, they said, without knowing who killed her only daughter.
Older brother Matthew said he remained shocked "Rani could be killed because someone had a bad day".
Younger brother Aaron said his sister raised him after their parents' divorce and would have done anything for him and others.
Aaron paused at times between reading his victim impact statement to stare at Bain-Singh, and said he made the statement not in the hope to get the killer a longer jail term, but "it's about him hearing the result of what his actions have done".
Ms Hassan said but for his drug abuse, the motive behind Bain-Singh's attacks on his victims remained largely unexplained.
Bain-Singh has spent 370 days in custody since his arrest. Justice Christopher Beale will sentence him at a later date.