Killings that shocked us, and put police to the test
Here in Ipswich we can count ourselves fortunate to live in one of the more peaceful parts of the country, where the most serious crimes are generally few and far between.
But go back through history and you will realise that this region has unfortunately been the setting for some the most disturbing acts of violence perpetrated on human beings.
The cases you are about to read about are just a sample of some of the murders, manslaughters and as yet unprosecuted crimes that have shocked Ipswich over the past 50 years or so.
Some of these crimes have left detectives and citizens alike asking questions decades after the fact.
Some of them, it appears, contain elements that may never be fully understood.
1. THE tumultuous tale of Dulcie Birt
It is quite possible that we will never know where Dulcie Birt's body ended up, even though her former partner, Alwyn John Gwilliams, admitted to her manslaughter in 2013, some four years after she went missing from her Riverview home on October 21, 2009.
Gwilliams was jailed for 10 years for the crime and declared a serious violent offender, but over the course of his various interviews with police, and the 2014 coronial inquest into the death, he never provided the information required to put the mystery to rest.
What made Dulcie Birt's case extraordinary was the lengths police went to in an effort to locate her body. This included partially draining the old lakes formed in mining voids in the Riverview bushland area, where detectives suspected Gwilliams had dumped her.
Unfortunately, those efforts proved fruitless.
So after all this time, what do we know of Dulcie's fate?
According to Coroner John Lock, in his findings at the inquest, Dulcie died as a direct result of the actions of Gwilliams in the form of an "undetermined assault", and that he may have initially dumped her body in the Riverview bushland, before moving it at some later point.
2. The horror behind Deidre Kennedy's death, and the story of the stolen ashes
Deidre was kidnapped from her cot in her parents' Ipswich home in April 1973.
She was only 17 months old at the time.
Her body was later found on the roof of a toilet block in Limestone Park, Ipswich, after she'd been horrifically beaten and sexually assaulted in one of the most obscene crimes ever seen in Queensland.
Raymond John Carroll was twice convicted of the murder but both the convictions were later overturned by the Court of Appeal.
Debate over the case resulted in discussion of double jeopardy law reform that might have allowed Carroll to be tried again for the alleged abduction, rape, and strangling death of Deidre.
Mystery still surrounds exactly what happened to Deidre that day, and her mother Faye's suffering was exacerbated in October, 2010, when thieves broke into her Laidley home and stole Deidre's ashes.
3. Leanne Holland's death, a conviction overturned, and a truth left untold
Leanne was only 12 when her battered and tortured body was found in bushland beside Redbank Plains Rd in September 1991, four days after she went missing.
She had extensive head injuries and her skirt was pulled above her waist.
Police charged Graham Stafford, the boyfriend of Leanne's older sister, with murder and he was convicted the following year.
It is a murder story that still captivates locals, especially given the fact that Stafford had his conviction overturned after serving 14 years in jail.
Mr Stafford has always strenuously denied killing Leanne.
His murder conviction was quashed in 2009 and a retrial was ordered, but the Director of Public Prosecutions ruled in March 2010 that it would not proceed.
In May 2010, the investigation was reopened and a cold case review was put in place, starting with a forensic examination of the house Leanne lived in.
She lived in Alice St, Goodna, with her father Terry, sister Melissa and Mr Stafford, who was Melissa's boyfriend at the time.
In 2012, the DPP said it would not retry the matter, and the case was closed.
This prompted protest from those close to the case, including former detective Ralph Knust, who remained convinced the truth could be revealed.
"I'm appalled that the Director of Public Prosecutions and the Attorney-General, or whoever it is that's behind the decision, will not take this back to court," he said.
"I think it's time. The public deserve to know the truth of the whole story."
4. Not all murders are what they first seem
The death of Vicki Hunter at her Sonter St, Raceview home in 2010 was initially attributed to the work of a mystery home invader sporting a "tribal tattoo on his lower left leg".
The man who would ultimately be convicted of his wife's murder, Ian Hunter, even joined his son Jason in an impassioned plea to help police find a mysterious killer who it turns out didn't exist.
The story of the invader was later confirmed to be a concoction of Ian Hunter, in the panic that unfolded after he'd fatally bludgeoned his wife of 37 years, on May 6, 2010.
The motive? Vicki's life insurance policy. The murder trial heard the couple had racked up severe debts due to Mr Hunter's gambling problems.
Mr Hunter was found guilty of murder at trial and sentenced to life in prison.
He later unsuccessfully appealed the conviction.
5. Double killing shocks tiny community
So terrible were the details of the deaths of Michael Desmond Manson and Carl Upson, one judge said he feared for the safety of prisoners after he sentenced Jamie Rex Teichmann.
Teichmann was initially sentenced to life in jail for a "brutal attack" on Mr Manson, 48, late on December 8, 2010, or the early hours of the next day.
The murder conviction was later overturned and replaced with a manslaughter conviction.
Mr Upson was fatally shot at his home several days after Teichmann killed Mr Manson.
For that crime, he was also sentenced to life behind bars.
A later appeal by Teichmann against his sentence for the murder of Mr Upson was dismissed.
6. Amanda Quirk's horrific final hours
Amanda Quirk's disappearance from her rented Dudleigh Street, Booval home in 2010 sparked a two-state police investigation.
The 32-year-old's body was found on April 8 near Drake, 70km west of the northern NSW town of Casino, after police interviewed one of the suspects in what was to become a murder case.
It was believed Ms Quirk, a single pensioner, was killed at her home late on March 31 before being driven across the border and dumped.
Her body was found down a small gully only metres from the side of a quiet stretch of the Bruxner Highway, just out of Drake.
Ms Quirk's distraught father Larry Quirk said his family was struggling to understand why someone would harm his daughter.
"She lived in that house by herself and she used to take in people who had nowhere to go - people who had just got out of prison or who were on drugs - she would give a hand to people who were down and out," Mr Quirk said.
Christopher James Swan was convicted of murder and sentenced to life in jail.
Rachel Narelle Smith was found guilty of being an accessory to murder and was jailed for seven years, with parole eligibility after serving three years.
7. Michelle Reynolds' senseless death at hands of violent partner
Michelle Reynolds was stabbed to death in her bed after her violent partner snapped when she refused to kiss him goodbye.
Wayne Ashley O'Sullivan, 50, confessed to waking early one April morning in 2016, retrieving a knife from his tackle box and returning to the bedroom he shared with the 46-year-old mother of six and stabbing her multiple times in the chest and neck.
Ipswich detectives later found the murder weapon dumped in long grass off Karrabin-Rosewood Rd - about 1km from the John St house in which Ms Reynolds was killed.
O'Sullivan was jailed for life but will be eligible for parole in 2036.
8. Provocation defence used in gruesome manslaughter
Jiagen Pan claimed he was provoked into killing his ex-wife Linjin Ciu at her Ipswich home in 2009.
Jiagen Pan, who butchered Linjin Ciu into seven pieces and tried to entomb the pieces in a wall, was found not guilty of murder in July, 2011.
He was found guilty of the lesser charge of manslaughter after arguing he was provoked by the victim, and was sentenced to 12 years in prison.
Pan claimed he was provoked into murder after his ex-wife said he never "satisfied me as a man".
Laws to prevent provocation being used a defence in murder cases came into effect in March 2011, after Pan was originally charged.
Pan, a noodle chef who was divorced from Ms Cui in March 2009, admitted he chopped her body into seven pieces and tried to entomb the parts in a homemade cavity he built in a hallway cupboard at his Woodridge home.
9. Industrial estate ambush leads to callous crime
Kieran Pye was only 23 when he was set upon during a robbery at Carole Park in April 2015.
Mr Pye, his girlfriend Renae Grove and his mate Peter Bell were attacked in the early hours of Thursday April 2, after being lured to a secluded location for a drug deal.
Tupu Sauaga, Wayne Lemaga, Paul Benecke and Casandra Lavelle were waiting.
Sauaga, 26, quickly pulled Mr Pye from the car.
The 23-year-old was stabbed multiple times, including in the back.
Casandra Renee Lavelle later pleaded guilty to manslaughter for her role in the incident, which involved running over Mr Pye's body as he lay on the road.
She was jailed for nine years.
Paul Benecke and Tupu Sauaga were also convicted of manslaughter over the incident.
Benecke, 44, was jailed and given a parole eligibility date of October, 2018.
Wayne Lemaga was found not guilty of murder and not guilty of manslaughter.
10. Body parts found in the fridge
Details around the alleged murder of David Thornton, a former maths and science teacher, remain unknown, with the accused man still before the courts.
Mr Thornton's remains were found inside a buried freezer at his home in Parker St, Goodna on April 1 last year.
It is expected the case will be heard later this year.