Rephonic
Artwork for Expanse
Pine Gap
Australia
Alice Springs
Robert Bogucki
Great Sandy Desert
Ufos
Cold War
UFO
Nannup Four
CIA
UAP
Matt Wright
Nannup
Gulf War
Tully Saucer Nest
Tully
Simon Cadwill
NSA
Halloween
Western Australia

Season 7 Expanse: Disappearing in the Devil's Triangle 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. On a freezing night in August 1981, a small six-seater plane vanished. The pilot's panicked call, '5000!', was t... more

PublishesInfrequentlyEpisodes45Founded4 years ago
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Artwork for Expanse

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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 kick... more

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.

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Recent Guests

Peter Greaves
Family friend and former police contact, involved in search
MacDougall family circle
Episode: UPDATE | Expanse: The Nannup Four - A new search
Matt Strickland
Vice president of FOLO (Find Our Lost Loved Ones)
FOLO
Episode: UPDATE | Expanse: The Nannup Four - Hope on the horizon
Phil Vine
Host of Radio New Zealand podcast The Lodge
Radio New Zealand
Episode: Behind the scenes | S6 host Dominique Bayens in conversation
Jessica Securo
Acting Detective Inspector, WA Police Major Crime Division
Western Australia Police
Episode: BONUS | Inside the Nannup Four police investigation
Jeremy Spivey
Detective Sergeant, Missing Person team, WA Police
Western Australia Police
Episode: BONUS | Inside the Nannup Four police investigation
Jim McDougall
Husband to Chantelle, father to Leela, family spokesperson
Family of Chantelle McDougall
Episode: 06 Expanse: The Nannup Four | Northcliffe
Cath McDougall
Wife of Chantelle, mother to Leela, family spokesperson
Family of Chantelle McDougall
Episode: 06 Expanse: The Nannup Four | Northcliffe
Jim MacDougall
Chantelle's father
MacDougall family
Episode: 03 Expanse: The Nannup Four | Down the rabbit hole
Kath MacDougall
Chantelle's mother
MacDougall family
Episode: 03 Expanse: The Nannup Four | Down the rabbit hole

Host

Dominique Bayens
Host of Expanse, guiding investigative storytelling around the Nannup Four and related inquiries

Reviews

4.6 out of 5 stars from 1.4k ratings
  • Nannup 4 tragic

    Unfortunately I can’t say I enjoyed this story a whole lot of strange people & no clarity on any of it other than the obvious … they are gone

    Apple Podcasts
    2
    Jenbluerose
    Australia4 months ago
  • S4 slowww….. talk….ing……

    Great content! Frustratingly slow narration.

    Apple Podcasts
    4
    Misssssd
    New Zealand4 months ago
  • Season 2

    I really enjoyed the story about the Blythe Star. I was so enthralled with listening to it. Thank you for telling these men’s harrowing story.

    Apple Podcasts
    5
    Aly Frazer
    United States5 months ago
  • Fantastic Journalism

    I have thoroughly enjoyed every single season of Expanse. This podcast is very thorough in its research and compassionate in its storytelling. Highly recommend for anyone who loves investigative journalism.

    Apple Podcasts
    5
    MeganJoAnn
    United States5 months ago
  • Excellent

    This podcast was incredibly well done but such a heartbreaking story. Rest in peace to Chantel and her young daughter.

    Apple Podcasts
    5
    BV teacher
    United States5 months ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Many feel the series handles sensitive topics with care and aims to provide closure for families.
Some listeners find narration slow at times but still appreciate the content.
Critiques include perceived bias and pacing criticisms in some seasons.
Listeners praise the show for thorough, compassionate storytelling and rigorous research.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Apple Podcasts
#126
United Kingdom/History
Apple Podcasts
#192
Canada/History
Spotify
#12
Australia/History
Apple Podcasts
#17
Australia/History
Apple Podcasts
#32
New Zealand/History
Apple Podcasts
#104
Ireland/History

Talking Points

Recent interactions between the hosts and their guests.

Behind the scenes | S6 host Dominique Bayens in conversation
Q: Where did you start in building trust with those involved and getting them to talk to you?
The process began with careful, extended conversations with family members and key figures, acknowledging their vulnerability and gradually gaining consent to include their stories in the podcast, while ensuring ethical boundaries and continuous fact-checking.
Behind the scenes | S6 host Dominique Bayens in conversation
Q: What started you down this pathway? Why did you go after these characters in the first place?
I was curious about the disappearance and the people behind it, wanting to understand who they were and the impact on the town, while also testing the stories that had circulated for years and uncovering new details.
BONUS | Who was Tony Popic?
Q: What stands out most about Tony's personality and his path during the late 1990s and early 2000s?
The guest notes Tony became nomadic, engaged with new-age circles, and formed intense, sometimes controlling relationships that appeared to influence his decisions and state of mind.
BONUS | Who was Tony Popic?
Q: Do you just want to introduce yourself and tell me what your connection is to Tony?
Joe explains he is Tony's brother and describes their shared upbringing, the move to Perth, and Tony's evolving interests and relationships that shaped his later life.
BONUS Expanse: Nowhere Man | Gunslinger
Q: What reaction did people have when they learned the truth about Garrison?
People were shocked and felt betrayed, especially those who had spent time with him and trusted him.

Audience Metrics

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Frequently Asked Questions About Expanse

What is Expanse about and what kind of topics does it cover?

Season-long investigative storytelling centers on a Western Australian disappearance known as the Nannup Four, blending intimate family accounts with police inquests, archival reporting, and ongoing field searches. Across episodes, the host and a steady roster of guests explore coercive influence, the dynamics of a fringe group, and how volunteer networks can complement or challenge official inquiries. The narrative often foregrounds family perspectives, expert analysis on cult behavior, and practical challenges in locating missing persons, while maintaining a compassionate, ground-level lens that seeks closure for those left behind. A standout aspect is the careful weaving of multiple viewpoints—families, law enforcement, independent resea... more

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Which podcasts are similar to Expanse?

These podcasts share a similar audience with Expanse:

1. Unravel
2. The Case Of
3. Background Briefing
4. Secrets We Keep
5. Australian True Crime

How many episodes of Expanse are there?

Expanse launched 4 years ago and published 45 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on Expanse?

Recent guests on Expanse include:

1. Peter Greaves
2. Matt Strickland
3. Phil Vine
4. Jessica Securo
5. Jeremy Spivey
6. Jim McDougall
7. Cath McDougall
8. Jim MacDougall

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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