Mystery continues to surround the circumstances of how the 37-year-old mother of three went missing.

She was last seen at her Brien Crescent home during the evening of Sunday August 18, 2002.

Police believe she was forcibly taken after foul play, but her body was never found despite extensive searching throughout the region.

Mrs Bergamin’s brother Roger Russell said the family had always believed someone knows what happened, but has kept quiet.

He hoped the lure of $1 million could change their minds.

“It would be good to have it resolved because the body’s never been recovered,” Mr Russell said.

“Somebody needs to say what they know.”

Three people refused to give evidence in the 2007 coroner’s inquest to avoid incriminating themselves, which Mr Russell said demonstrated the evidence was there.

“We have been trying to get the reward increased,” he said.

“We’re hoping this is the next step in getting it up and getting to court.”

A statement from Victoria Police said missing persons squad detectives continued to investigate the suspicious disappearance. 

“A $1 million reward has been announced and will be paid at the discretion of the Chief Commissioner of Police for information leading to the apprehension and subsequent conviction of the person or persons responsible,” the statement said. 

Anyone with information is urged to contact Crimestoppers on 1800 333 000 or submit a report at www.crimestoppersvic.com.au.