Chris Dawson, 70, was arrested on a warrant and hauled before a Queensland court on Wednesday nearly four decades after his wife was last seen alive.
The 70-year-old was arrested by detectives on Wednesday morning at his Queensland home.
More than 27 million people have listened to The Teacher's Pet produced by The Australian-which hit No. 1 in the US, Canada, and the UK-since it began in May exploring Lynette Dawson's 1982 murder, reports the BBC.
Commissioner Mick Fuller said police, who conducted several digs at the former Dawson family home in Bayview, on Sydney's northern beaches, wanted to find Lyn's body but said that it was "not crucial to finalising the matter".
Two days after Mrs Dawson went missing, Joanne Curtis, a 16-year-old student at Cromer High School where Mr Dawson was a teacher, moved into the family's home.
"Statements from witnesses helped us tie pieces of the puzzle together".
Lyn Dawson's family are seeking privacy at this time, but are relieved.
He's been refused bail and will appear at Central Local Court today.
Following extensive investigations, detectives requested the Office of the Director of Public Prosecutions review their brief of evidence in April this year.
Dawson has always maintained his innocence, and claimed his wife had run away to live with a religious cult in remote area of NSW.
Despite two coronial inquests recommending Chris be prosecuted for murder, the DPP stated at the time there was insufficient evidence to lay charges.
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Mr Dawson will face a NSW court later this week.
"She was trying to prepare herself but nothing prepares you for this", McNally said.
It comes after detectives from the Homicide Squad's Unsolved Homicide Unit established Strike Force Scriven in 2015 to re-investigate the circumstances surrounding Lynette's disappearance and suspected murder.
In September, police searched Ms Dawson's former home but failed to discover any remains or items of interest.
"It is my understanding two additional statements were the work of the media", he said.
"We have sold homicide before without identifying the body", he continued.
In September investigators spent nearly a week digging up the Dawsons' former Bayview home but found no human remains and no significant clues.
"I'm the happiest man alive today, and if Lynette is up there looking down, she'd be smiling at us", he told News Corp Australia.
"We have to also ensure Chris gets due process".
In a statement, the Dawson family said it was disappointed.