In 2007, a family of three and their friend vanished from their secluded home in Nannup, Western Australia, leaving only a cryptic note claiming they had moved to Brazil. They never arrived.

As investigators delved into the lives of Chantelle McDougall, her partner Simon Cadwell, their daughter Leela, and friend Tony Popic, they uncovered a web of doomsday prepping and cult-like spiritual beliefs.

Was this a voluntary disappearance to a "higher plane," or something far more sinister?

LINKS

Listen to Expanse: The Nannup Four here.

If any of the contents in this episode have caused distress, know that there is help available via Lifeline on 13 11 14 or Beyond Blue on 1300 22 4636.

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CREDITS

Guest: Dominique Bayens

Host: Gemma Bath

Senior Producer: Tahli Blackman

Group Executive Producer: Ilaria Brophy

Audio Engineer: Jacob Round

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The Australian Family Cult That Vanished Overnight