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Coffee and Cases Podcast

The Tromp Family

Coffee and Cases Podcast

Cloud10

True Crime

4.7 • 639 Ratings

🗓️ 25 September 2025

⏱️ 50 minutes

🧾️ Download transcript

Summary

In late August 2016, the Tromp family of Silvan, Victoria—Mark, Jacoba, and their three adult children—suddenly fled their successful berry farm and thriving businesses without phones, wallets, or passports. Over the next week, their strange journey would stretch hundreds of miles across Australia, leaving behind a trail of abandoned cars, disoriented wanderings, and desperate pleas for help. What could drive a close-knit, hardworking family to believe they were being hunted? Was it paranoia, environmental toxins, or a rare psychological condition known as folie à deux—shared psychosis? The case gripped the nation of Australia, making headlines worldwide, and even now it leaves more questions than answers. Why did some family members resist the delusion while others collapsed under its weight? And most haunting of all—could something like this happen to any of us? If you are interested in bonus content for our show or in getting some Coffee and Cases swag, please consider joining Patreon. There are various levels to fit your needs, all of which can be found here: https://www.patreon.com/coffeeandcases Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0

When I talk to my students about literature and life, one of the things that always fascinates them is the power of the human mind, not just in the inspirational sense that grit and determination can push someone to achieve greatness, but in the haunting, fragile sense of what happens when the mind convinces us of something that

0:23.8

isn't really there. We talk about the 18 people in Leroy, New York, who not that long ago, in

0:32.2

2011, began developing sudden uncontrollable ticks. Otherwise, healthy individuals, 17 of which were high school

0:42.6

students, and 16 of those 17 were teenage girls, who began exhibiting Tourette's-like symptoms seemingly

0:51.2

overnight. Doctors couldn't pinpoint one physical cause. Instead, they pointed

0:58.0

to the psychological, stress, anxiety, even social contagion. In other words, mass psychogenic illness,

1:08.0

or mass hysteria. Or I'll tell them about pseudosysis. And that's when a woman

1:15.3

believes so completely that she is pregnant that her body follows along. Her abdomen swells,

1:23.6

her hormones shift, she lactates. Her body mimics the process of creating life, but there's no baby.

1:33.3

The mind alone commands the body and the body obeys.

1:39.5

History is full of these strange echoes of the mind's power.

1:43.7

In 1518, dozens of people in Strasbourg

1:47.9

danced themselves to exhaustion and even death in what became known as the dancing plague of

1:55.8

1518. Some blamed ergot fungus on rye bread. Others believed it was mass hysteria. Either way, the streets

2:05.4

filled with writhing bodies because of something that began, not with muscle or bone, but with the brain.

2:12.8

It's crazy what our minds can convince us of, the miraculous, the terrifying, the unexplainable,

2:19.9

and that's what brings me to our story today. Was our case this week a matter of shared psychosis

2:27.0

or something else entirely? This is the case of the Trump family.

3:13.3

Thank you. This is the case of the Trump family. Welcome to coffee and cases where we like our coffee and cases where we like our coffee hot and our cases cold. My name is Allison Williams.

3:15.3

And my name is Maggie Damron.

3:17.3

We will be telling stories each week in the hopes that someone out there with any information concerning the cases will take those tips to law enforcement so justice

3:25.1

and closure can be brought to these families with each case we encourage you to continue in the

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