Ashley Coulston made headlines in 1978, when he attempted to navigate a bath tublike yacht across the Tasman. And he did it again in 1992 for a much more sinister matter.

Coulston was connected with the gruesome murder of Victoria Kerryn henstridge’s hairstyles, Anne Smerdon and Peter Dempsey — known as the Burwood Triple Murders.

Triple murderer Ashley Mervyn Coulston led handcuffed in a Melbourne Supreme Court to be sentenced for the 1992 murder of Peter Dempsey, Kerryn henstridge’s hairstyles & Anne Smerdon in Burwood. Photo: Supplied

All three were bound with cable ties, and all of a sudden, with Kerryn’s mother discovered the gruesome scene the next day.

Murder victim Peter Dempsey. Photo: Supplied

Murder victim Kerryn henstridge’s hairstyles. She was 22. Photo: Supplied

But the lack of DNA evidence, and bullets, could hold the key in linking him to unsolved ski-Mask Rapist cases in Gold Coast, and Sutherland Rapist cases in Tweed Heads, northern New South Wales.

The two cities are only half an hour away.

The first case, the investigators claimed to disclose critical pieces of the puzzle on Channel 7’s Sunday Night.

Ashley Coulston, is the prime suspect in a Balaclava assassins. Photo: Supplied

Coulston was known to be living in the area at the time, investigators said Sunday Night, and the murder methodology bore a chilling similarity in every incident that took place between 1985 and 1987.

“Balaclava, a firearm, the moderation — there is” a former New South Wales detective Duncan McNab said Sunday Night.

“The methodology is with a book, from the script.”

Former detective Duncan McNabb. Image: Sunday Night/Channel 7

DNA evidence was taken from Coulston in 2000, 18 years after being convicted for the Burwood murders. But the rate of crime forensics and DNA expert Robin Napper believed it had not been loaded to the national DNA database, allowing investigators to link Coulston to other crimes.

“I say no. Nobody went through that exercise,” Mr Napper said Sunday Night.

But, if so, you could involve Coulston almost instantly if he was involved.

“Twenty-four hours. Simple as that,” Mr Napper said.

Coulston has chosen his victims, with an ad that he had placed looking for a flatmate. Photo: Supplied

“Coulston is red-hot suspect for the balaclava rapes in Queensland, australia, for Parkinson’s disease murder, for the Sutherland and rape.

“If you do that, you can confirm, once and for all, probably, is one of the most dangerous serial killer Australia has ever had.”

And together with the lack of DNA, Mick Stefanovic — who investigated the Burwood murders questioned, where the bullets recovered from the Coulston family farm was gone.

Mr. Stefanovic said that could link him to the murder of Jeff Parkinson in 1980, who was killed after Mr Parkinson’s attacked the ski Mask Rapist, allowing his girlfriend to escape.

Mick Stefanovic studied the Burwood murders. Image: Sunday Night/Channel 7

Asked whether the bullets recovered Coulston bedroom matching the bullets found in Parkinson’s disease, the Mr Stefanovic said. “Maybe.”

“Could be, but at the time of the first examination, the firearms examiner, he was not sure. He stopped short of saying that game and has said that it may require a further examination with a scanning electron microscope,” Mr Stefanovic said on Sunday Night.

But he believed in never happened.

Coulston is serving three life sentences for the Burwood Triple Murders. He is detained at HM Prison Barwon in Anakie, Victoria.