To conceal a murder and to conceal the sordid double life his family knew nothing about.
The inquest
The two officers called to Volke's apartment, ostensibly for a welfare check, thought they had stumbled upon a sick joke.
In the pot he had been using to cook her body parts, they found what appeared to be human feet.
Other parts of Mayang Prasetyo's dismembered remains were found in a garbage bag near the washing machine.
The opening day of the inquest into hers and Volke's deaths on Monday heard Senior Constable Bryan Reid and Constable Luke McWhinney initially were called to conduct a routine welfare check late on Saturday, October 4, 2014.
"(There) was a bad smell, it was something I hadn't smelt before and can't really describe," Sen Const Reid said at the inquest in Brisbane on Monday.
An electrician had visited to restore power in Volke's apartment, which he had short-circuited when a pot had boiled over.
It was he who raised the initial alarm.
The building managers called police, concerned about the smell and that the woman who lived there with him had not been seen for a couple of days.
Sen Const Reid said Volke was initially co-operative when they questioned him outside his apartment.
But when he went back inside, telling the officers he needed to secure the pair's dogs, Volke locked the door, self-harmed and jumped his balcony fence to escape to a rear laneway.
There was a pool of blood on the floor beside the pot that contained Prasetyos' feet. He was later found dead inside a nearby bin.
The scene of the crime
The Double One 3 apartment complex in the up-market, riverside enclave of Teneriffe was so new in early October 2014, a giant banner still hung on the side of the building advertising units for rent.
Finishing touches were still being applied inside.
Ad hoc pieces of A4 paper taped to walls directed residents to their new homes, which investors had paid upwards of $600,000 for.
Volke, who was raised in the small country Victorian farming community of Haddon, just outside Ballarat, was among the first to move in.
He and his young Indonesian wife Mayang Prasetyo had lived in a ground floor apartment with their three small pugs for just a couple of months.
During their brief tenure in the building, Prasetyo was frequently seen walking the dogs along the riverside paths and in parks nearby.
On the surface, they were a young couple who had recently returned to Brisbane after working on cruise ships, he as a chef, she as a cabaret dancer.
The reality was very, very different.
Double lives
Volke left his regional Victorian home for Melbourne to further his trade after high school but he soon discovered a far more lucrative profession.
At Pleasure Dome brothel, which promotes itself as having Australia's "finest selection of male escorts and transsexuals," he was introduced to fellow sex worker Prasetyo.
Born Febri Andriansyah in Indonesia, she transitioned to a woman before moving to Australia and working as a high class transgender escort, eventually charging her clients $500 per hour.
She sent the funds back to her impoverished mother and two younger sisters at home, paying for the girls to go to school.
They had no idea how she was earning the money that supported them.
The couple moved into private escort services after leaving the Melbourne brothel and travelled the world plying their trade.
They settled for a while in Denmark, where, under the name Heath XL, Volke advertised himself as a "young sexy Australian boy, very friendly and easy going, discreet and professional."
"I'm open to all kinds of people, ages and backgrounds but if you are cool, serious and generous, then we can be a match!"
In 2013, the couple married in Copenhagen, after Volke asked his prospective mother-in-law for permission to marry her daughter on a return trip the couple made to Indonesia.
While Prasetyo's family knew of her marriage, Volke's family back near Ballarat were completely in the dark.
As far as they knew, the son who infrequently called home and occasionally visited - alone - was travelling the world while cooking on cruise ships.
They knew nothing of Prasetyo's existence, or of their son's double life.
The extent of his deception was not revealed until after his death.
In addition to coming to terms with the grief of suddenly losing their son, the couple also had to absorb the confronting details of his sordid life being so publicly exposed.
When reporters came knocking at the family property in the days following the deaths, Volke's clearly distressed father Peter, a karate instructor, chased them away.
The 27-year-old was farewelled in a small, private funeral service in North Ballarat.
Media interest was high but they were told, in no uncertain terms, they were not welcome.
A new life in Brisbane
Volke and his new wife returned to Australia nearly a year after their August 2013 marriage in Copenhagen.
Like many affluent young professionals, they chose to live in Teneriffe, an up-market Brisbane suburb that hugs the river.
Teneriffe boasts plentiful cafes, bars and boutiques, among the rustic, riverside red brick buildings that once operated as wool stores, now converted to sought after apartments.
The couple both continued to work as private escorts.
Friends and family hinted that, despite their recent marriage, their relationship was a volatile one.
None of them could have foreseen the horror to come.
The murder
Neighbours heard Volke and his wife fighting inside their apartment late on Thursday, October 2.
Prasetyo was not seen again.
In the days following the discovery of her remains, Detective Senior Sergeant Tom Armitt said investigators did not believe the murder was a premeditated one, but the tragic outcome of a heated domestic dispute.
On the way out, he talked to the building manager and police were called.
Within hours, Volke would also take his own life.
The welfare check
Senior Constable Bryan Reid and Constable Liam McWhinney responded to the building manager's request for the welfare check.
The pair knocked on the door just before 9pm on Saturday and the killer was caught red-handed.
A routine welfare check became the stuff of nightmares.
The scene that confronted the officers in that near-new unit was particularly gruesome - human feet in the pot and other parts filling garbage bags ready for disposal.
He slashed his own throat inside the apartment before jumping his balcony fence, which faced a laneway behind the building, leaving it smeared with blood.
He continued to leave a blood trail as he ran and hid in an industrial bin a nearby laneway.
With a suspected murderer on the loose, police quickly mobilised and soon an estimated 15 officers swarmed to Dath Street.
For years, Volke had successfully concealed his marriage and life as a male prostitute.
As he hid from police in the wheelie bin it was all on the brink of exposure.
It was inside the bin that he died, the blood leaving streaming from his throat wound so quickly, subsequent CPR attempts by police and paramedics were utterly hopeless.
The coronial inquest
The investigation into Volke and Prasetyo's death was a lengthy and painstaking one.
The Queensland Ethical Standards Command, the body reserved for internal police investigations, led the probe, as Volke was on the run from two officers when he took his life.
This week, Coroner Terry Ryan will hear submissions to make the final ruling on one of Brisbane's most gruesome cases of murder-suicide.
The death of Febri Andriansyah, as the pre-operative transgender woman was still legally known, is expected to be a largely open and shut ruling.
That of Volke, however, warrants further investigation.
The police response will be under the microscope, with the question Ryan will make the ruling on being, did the officers who were called to the scene that night contribute, in any way, to the 27-year-old's death?
Both Sen Const. Reid and Const. McWhinney, the first responders, are scheduled to give evidence.
As are three other officers, Detective Sergeant Tom Jakes, the dog squad's Senior Constable Robert Richardson and district duty officer, Senior Sergeant Sean McKay.
The coronial hearing is set for two days in Brisbane.