The butterfly effect includes some sexually explicit material, and so it's not suitable for everyone.

Stories can start when you least expect them. This story started for me when I happened to see a man

glance at a woman. Nobody was supposed to notice the glance, but by chance I did. It happened

in a Los Angeles hotel lobby one evening in January 2013. The woman was there to meet me.

She was a veteran porn performer, and I was interviewing her for a different story.

The hotel receptionist telephoned my room to tell me that my guest was waiting for me in the lobby.

I went downstairs and spotted her straight away. Her dress was bright blue and very tight.

Everybody else in the lobby was dressed in inconspicuous colours. She seemed so otherworldly

like a great mad peacock. I walked towards her. That's when I noticed the glance. It was the hotel

receptionist. I just happened to swing around as he was looking at her. It was a look of total contempt.

He made me think that some people are only comfortable with porn people when they're on their

computers and not in their vicinity. And with disgust comes in curiousness. So I became curious.

What were their lives like? What were their concerns? I began researching and it turned out that

a lot of them were concerned about the same very specific thing, a man called Fabian.

The series is about what happened because of Fabian.

Should we start? Sure. Fabian, maybe the first thing you should do is just introduce yourself.

Just tell me your name. I'm Fabian, tell me one. Yes, how much do you want to know?

That's good for now. I will eat more out during the questioning process.

The series tells the story of a butterfly effect. Back when Fabian was a teenager in Brussels

in the 1990s, he had an idea. Because of that idea, some people in Montreal eventually started to

behave differently. As a consequence, other people down in the San Fernando Valley started behaving

differently and so on. For a year, I've been tracing Fabian's butterfly effect.

...