Breakthrough in missing model Revelle Balmain mystery

For almost 30 years, the 22-year-old model's disappearance and assumed murder has perplexed authorities and plagued her family. 

But now, 60 Minutes can reveal new evidence pointing to two new possible persons of interest, which could finally lead to justice for the former cover girl.

On Saturday, November 5, 1994 — the night Balmain went missing — she was working as an escort to fund an upcoming trip to Japan where she would pursue a career in her first love: dance. 

That evening, she completed an appointment with client Gavin Samer in Kingsford in Sydney's east.

Samer claimed he dropped Balmain to a nearby pub following their meeting. 

When Balmain's possessions were discovered not far from Samer's apartment days later, he became the prime suspect — an allegation he has always denied and never been charged with. 

The initial investigation proved unsuccessful, with no suspect ever charged.

However, three years ago, Detective Stuart Bell reopened the case, fastidiously re-examining old evidence whilst finding new leads. 

"The key to solving the case is establishing if Revelle met any other person — be that a client or a friend — on the night she disappeared," he told Tara Brown.

In 1994, Jane King was Balmain's boss. She ran a Sydney escort agency with then husband Zoran Stanojevic.

King confirmed to 60 Minutes that Stanojevic was not at home the night of Balmain's disappearance, contradicting what he first told police in 1994. 

Tara Brown asked why Stanojevic initially told police that he stayed in that night, King was surprised.

"I wouldn't know why he would say that because he didn't stay in," she said.

Stanojevic shared a new alibi four years after his initial one, claiming he was driving another escort to an appointment, though phone calls to support this have never been found.

Samer was not Balmain's only booking the night she disappeared. 

Stanojevic had scheduled an appointment for her with a Serbian friend named Boyarn Prvulovic after Samer's appointment.

Though King never met her ex-husband's friend, she revealed information surrounding his movements in the immediate aftermath of Balmain's disappearance. 

"Zoran arranged a plane ticket to Thailand for Boyarn to leave the country a day after Revelle went missing," she said.

"Clearly Zoran must've known Boyarn fairly well to have arranged his flight."

The new information gives hope to Balmain's sister, Sue Ellen, who believes the initial investigation conducted into her sibling's disappearance was not thorough enough. 

"I think it's because the previous detective didn't care much about escorts. But, you can't just kill people and get away with it," she said.

Bell is adamant on delivering Sue Ellen closure regarding her missing sister. 

"People have provided anonymous information into the case over the years, but establishing a witness is crucial to solving the mystery," the detective said.

"We need the person with information to reveal themselves, so that we can set a timeline for the investigation. It's very clear that they're aware of some of the events that occurred in 1994."

Watch the full episode of 60 Minutes on 9Now.