Flight VH-MDX appears to have vanished, and authorities launch a massive search across the unforgiving Barrington Tops landscape to find it. With freezing temperatures setting in and survival experts giving the men just days to live, every hour counts.  

It’s a pitch-black and freezing August night in 1981 when a pilot overhears the terrifying final minutes of flight VH-MDX over the radio.  

The Barrington Tops is rugged and unforgiving. With impenetrable bush and towering mountains, it eats up people and planes. It’s sometimes called the ‘Devil’s Triangle’. And it guards a mystery that hasn’t been answered in 45 years.  

It's been a busy few months for host Dominique Bayens, working alongside search organisers and chasing down loose ends. It all comes together with some crucial new information coming to light as a community-led search for the missing Nannup four kicks off. 

Host of season 6, Expanse: The Nannup Four, Dominique Bayens has been following the developments of the case of four people who disappeared from the isolated town of Nannup. 

What goes into making a season of Expanse? What considerations are made when telling the stories of people's lives? Host of Expanse: The Nannup Four, Dominique Bayens, sits down with fellow podcast host Phil Vine to take you behind the curtain.

It has been months in the making, but police are opening up the files on the missing Nannup Four for Expanse host Dominique Bayens, and there's news on another search. 

Since the podcast started rolling out, a lot of people have got in touch with information. Two people have been able to shed light on some previously unknown parts of the story. 

A family friend and former policeman continues to search for answers for Jim and Cath McDougall decades after the Nannup four vanished. The family and friends of Chantelle McDougall try to find their own answers, as one last glimmer of hope emerges. 

Jim and Cath McDougall are left reeling as the true depth of Simon Kadwill’s deception is revealed. Dominique tracks down people from his past, and hears from someone who has never spoken before who provides a startling insight into how Simon might have ended up on the path he did.   

Tony Popic is talking about an end of days, Simon is seeing spirits and Chantelle is forced into a difficult decision as increasingly troubling hints something's not right come to light.