Sana Khadar

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It's all about the psychological tools and tricks that come with investigating crime.

All in the Mind, Forensic.

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Tammy Shipley believed someone was out to hurt her.

I thought someone was after me and I wanted to just be safe.

She's put under 24-hour surveillance.

And then something strange happens.

She just drank and drank and had something like 20 litres of pure water.

So every now and then, at the start or end of an interview, I will ask the person I'm speaking to how they got interested in their line of work.

Sometimes the answers are interesting, sometimes they're not.

Rebecca Wilcoxon's answer for how she got into studying lie detection has to be one of the funniest I have ever heard.

Especially because the story starts straightforward enough.

What was your way?

How did you work that out?

What was it?

What was the method?

Oh, my God.