A prisoner dubbed Queensland’s “Black Widow” could be released on parole in a matter of months.

After serving almost 25 years of a life sentence, there are concerns Patricia Byers may have figured out a way to walk free.

In 1993, John Asquith was in a relationship with Byers when the couple took a yacht trip on Moreton Bay.

After dinner and a few drinks, Mr Asquith went to bed.

In what is understood to be a ploy to obtain Mr Asquith’s life insurance, Byers shot him in the head at close range with a sawn-off shotgun while he slept.

Byers’ plans were thwarted when Mr Asquith survived, contacted the coastguard and later testified against his partner in court.

After the attack on Mr Asquith, police suspicions were raised about a previous relationship Byers had.

Carel Gottgens, 51, was in a relationship with Byers until he disappeared in 1990.

Byers was convicted of Mr Gottgens murder in 1999, however a body was never located.

The 72-year-old has made four applications for parole over the years and there are concerns her latest attempt could pay off.

In 2009, Byers was transferred to a prison in South Australia to be closer to her son Alan Byers.

The “No body, no parole” law was introduced in South Australia in July 2015.

It prevents convicted murderers, who deliberately withhold information about the whereabouts of a body, from being considered for release by a parole board.

Hoping to succeed with her latest parole attempt, in 2016 Byers finally confessed to the murder of Mr Gottgens.

She told Detectives she was with Mr Gottgens at Queensland’s Logan River in July 1990.

She said she struck him in the back of the head with a machete causing his body to slump into the water.

However, there are doubts that Byers is telling the truth.

“We conducted a search after she gave us the information,” Acting Superintendent Damien Hansen said at the time.

“We did not find any remains and we have reported that back.”

At the original trial, Byers told investigators Mr Gottgens had run off with another woman and she didn’t know his whereabouts. The couple had been in a relationship for eight years before he disappeared.

Investigators suspected Byers had killed Mr Gottgens at their home because his blood was found in the couple’s bedroom.

They also found evidence that Byers had forged documents to claim Mr Gottgens’ boat and luxury house.

Mr Gottgens children from a previous marriage contested the changes and had the deeds reverted back to their fathers name.

Similarly, Byers also forged Mr Asquith’s signature on multiple life insurance documents, making her the sole beneficiary to his assets.

With the similarities in Byers criminal history, some believe there could be more victims. 

“There are even concerns about what happened to her first husband. He died when they were out shooting,” True Crime Australia executive editor Kathy Lipari told Weekend TODAY.

Byers married young and was living in Darwin with her two sons and husband when he died.

Ms Lipari also said Byers eldest son was killed when he was a passenger on a motorbike she was in control of.

Her son was decapitated in the accident.

“She’s an amazing manipulator with an incredible criminal mind,” Ms Liapri said.

Most other Australian states have adopted the “No body, no parole” laws and if Byers is granted release, the families of her victims are concerned for their safety.

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