Missing woman Mary Louise Wallace
Missing woman Mary Louise Wallace

$100k reward for information on missing woman

ALMOST 30 years after a popular NSW nurse went missing on a night out with friends, a $100,000 reward has been offered for information leading to the arrest of her suspected killer.

Mary Louise Wallace, 33, was last seen leaving the Alpine Inn on Sydney's North Shore in a car being driven by a man masquerading as a police officer in the early hours of Saturday, September 24, 1983.

Detective Chief Inspector John Lehmann revealed on Monday, officers from the Unsolved Homicides Team were investigating the possible links between Mary's suspected murder and a series of sexual assaults in the area during the 80s.

He said he believed there were other women who may have been approached in similar circumstances, particularly at hotels in Sydney's Lower North shore in the years prior to and after Mary's disappearance and asked anyone with information "no matter how insignificant" to come forward.

"That night, Mary Wallace did what tens of thousands of other women do across Sydney every Friday night - she went out with friends for a few drinks," Chief Insp Lehmann said.

"But unlike the other tens of thousands of women, Mary didn't make it home, and almost 30 years on, her friends and family still want to know what happened.

"We are hopeful that there is someone out there who can provide us with the information that will allow us to bring Mary's family and friends that closure."

Nearby bushland and an observation deck at the Lane Cove National Park have been thoroughly searched and excavated over the years but police still have no clues as to where Mary may have been taken.

Her elder sister, Anne Fraser, said on Monday she was hopeful the reward being offered by the State Government would encourage someone to speak up.

She described Mary as a "gentle, lovely happy girl who was adored by everyone who knew her" and she was making the public plea on behalf of her late parents who would "want me to do everything I can to help police".

Anyone with information can phone Crime Stoppers on 1800 333 000.

MISSING BOY: Have you seen Byron?

MISSING BOY: Have you seen Byron?

The 14-year-old, from Tweed Heads, has not returned home.

Stages and big tents: What Bluesfest 2021 will be like

Premium Content Stages and big tents: What Bluesfest 2021 will be like

Organisers also revealed extra details on how this Easter will look

STILL MISSING: Elizabeth was last seen five months ago

Premium Content STILL MISSING: Elizabeth was last seen five months ago

Elizabeth Forman was last seen walking near her Brooklet property