Just a few miles off the Thailand coast, the island of Kothau looks like a postcard.

I'd underneath the surface lies something sinister.

In the last 20 years dozens of tourists have died mysteriously on the island.

A dark cloud who's come over the island, death, mystery and danger.

Listen to Death Island every Wednesday on the I Heart Radio app, Apple Podcasts or wherever you get your podcasts.

What one technological advancement do you wish had never been invented?

So phone!

In 2007, my Trees Richardson participated in the Miss Fullerton Beauty pageant.

That's Fullerton, California, just south of Los Angeles.

Although when you're stranded they help contact your family and the need of a spare tire or just any need of emergency.

But they also cause a lot of accidents and they cause a lot of friendships from forming because as soon as people get out of class the first thing they want to do is talk on their cell phones.

So I just wish that cell phones would be limited to just emergencies only.

She's wearing a dazzling beige ball gown and glides across the stage to Frank Sinatra's the way you look tonight.

She's funny, beautiful and has an electric smile.

Two years later, her family released this pageant video to show the public what my Trees looks like, how she talks, how she walks, because my Trees is missing.

Desperate for answers, friends and family had begun to retrace my Trees' steps.

I'm Catherine Townsend and this is Helen Gone.

It's 5.35 am on September 17th, 2009.

My Trees' mother, Latise, is terrified. She called the Lost Hills Sheriff Station at around 4.30 am to ask about my Trees' bail and to make arrangements to pick up her daughter, only for the jailor to tell her that my Trees had been released hours earlier.

So Latise called back and was connected to another officer.

Latise is telling him that her daughter was 40 miles from home and depressed and had no way home and no knowledge of the area.

She doesn't know the area, she's never been in your area before.

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