A week-long inquest will be held into the murder of Bronwynne Richardson starting on Monday.

The 17-year-old was last seen being dragged into a car on Smollett Street in Albury on October 12, 1973 after finishing her shift at Coles.

She was found dead at Horseshoe Lagoon two days later with horrific injuries.

Two inquests have been held into her death and a third is listed in Albury Coroner's Court next week after new information surfaced.

It's unclear what that information is.

Charges have been laid against four men linked to her disappearance and death, most recently in late 2014.

But to date nobody has been convicted and the case remains open with a $1,000,000 reward on offer.

Police on Monday confirmed a taskforce was investigating all lines of inquiry with the case.

Bronwynne's father and two siblings died without the case being resolved.

The late teenager's mother Noelle, now aged 87, still wakes up screaming.

She drove past the scene of the crime on the night, noticing headlights at Horseshoe Lagoon but was unaware of what was likely unfolding.

Bronwynne's sister Fiona Hume will return to the region next week for the inquest, which follows similar coronial inquiries in 2011 and 1975.

The 2011 inquest sparked interest in the late teen's distant cousin, Colin Michael Newey, and led to him being charged with murder. Those charges were dropped.

Charges were laid against three men in 1990 but did not proceed.

While Ms Hume flatly rejected the idea that those responsible for the incident would ever confess, she is ever hopeful of one day finding out what occurred.

"The case is 48 years old this year and the likelihood of anyone being charged and prosecuted is slim at best," she said.

"But we're hopeful of having some answers for my mum before anything happens to her.

"She wakes up screaming, she must just relive that night."

The family moved from Corowa in 1975 due to the incident.

They still talk regularly about the late beauty queen as a way to deal with their trauma.

"One of the best ways to deal with someone who's gone is to continually talk about them," Ms Hume said.

"Every October we take some time to put a memoriam in The Border Mail and we've always made sure we've been there with mum and dad.

"Getting answers means quite a lot because what happened left a lasting legacy on every member of the family, especially mum and dad.

"The whole reason that we've kept fighting for justice for her is finding out exactly who was involved.

"More than anything, having those answers would give us some resolution."

It's unclear what the new inquest will involve.

Limited details were available, but the matter is listed for five days in the Albury court precinct.

Deputy state coroner Carmel Forbes determined the new evidence made it necessary to hold a fresh inquest.

She returned an open finding after four days of evidence in 2011.

A police spokeswoman on Monday said the case remained active.

"Strike Force Kulaman II detectives are continuing to investigate all lines of inquiry relating to the 1973 murder of Albury teenager, Bronwynne Richardson," the spokeswoman said.

"In June 2019, a $1 million reward for information that leads to the arrest and conviction of those responsible for her death was announced, and remains on offer today.

"As inquiries continue, detectives are urging anyone with information to come forward and contact police or Crime Stoppers on 1800 333 000."

Bronwynne's sister still keeps in semi-regular contact with investigators.

IN OTHER NEWS:

Speaking in June 2019 when the reward was increased to $1 million, homicide Detective Superintendent Scott Cook said the investigation was occurring in NSW and interstate.

"There is someone out there who knows who is responsible for her death and we're hoping this reward increase may prompt them to get in touch with police," he said.

The vehicle Bronwynne was seen being dragged into and driven away in, described as being similar to a pale green and white 1961 FB Holden station wagon, has never been recovered.