Transcript for Investigating the Dark Underworld of Sex Trafficking in Holland
Tonight we take you inside the dark world of trafficking. Through the eyes of a woman who has made it her mission to live in it. Her new documentary series uncovers some uncomfortable truth and exposes the methods of brutal criminal enterprises. Here's ABC's linsey Davis. Reporter: These situations are really delicate. This 28-year-old is traveling through Bulgaria, on her way to meet with someone most young women fear. So I've been told that this is the former house of a drug Barron who is now in prison. This is where the pimp wants to meet. Reporter: She's here to investigate the dark underworld of sex trafficking. When she comes face to face with a man who spent years as a pimp, he tells her, if I'm looking for a woman to be a prostitute, I don't look at her physical appearance, I look at her character, so I can manipulate her more easily. She doesn't seem to flinch. So you were never afraid of being caught by the police? Reporter: He says, I had protection. Pimps pay police. That's how it works. Though small in stature, or maybe because of it, she's adept at extracting details of the criminal underworld from the people who conduct business within it. People want to talk. It's cathartic. They can express or tell a secret that they've been holding for so very long. We live in a black market world. Reporter: Now the face of the dock yu-series, the traffickers. With the right money, you can buy anything. Reporter: She's exploring illegal, often dangerous and multi billion dollar world of black markets. Drugs, sex, and even human body parts, all sold by vast criminal networks. Reporter: Tracing the paths of weapons, counterfeit drugs, human organs, from consumer to source. These are the drugs. Reporter: Often finding herself in all sorts of compromising locations. What's going on here in the street is really, really intense. Reporter: Amsterdam's seedy red light district. God, it's so weird. Reporter: Is where she begins her look into trafficking women for the sex industry. They look quite relaxed. They don't look like they're having a bad time. Reporter: The sex industry in Holland is an illegal billion dollar business, but local authorities suspect many of the women on displays are being forced to work. It is big mother. If I'm a prostitute, I can use it again and again to make money. So it's easy money. If you compare it to weapons and drugs. Poor women of dollcolor are the most ignored, politically, socially, and economically in the world. Nobody cares about these women. I've just got a message from a girl who says that she's being trafficked and she wants to talk to me. Reporter: A local reporter helps her meet this woman, who says she was forced to work as a prostitute for three years. Minimum, I have to sleep with 30 guys per night. 30 men? Yeah. My body was so tired. Reporter: She says she was sold into prostitution by her grandmother. How did they break you? They beat you and they rape you. Reporter: Her pimp, also tattooed his name on her wrist, branding her as his property. In Bulgaria, where she's from, it's estimated as many as 10,000 women and girls are trafficked into sex slavery every year. And I am supposed to have these profound reactions about what I've just felt, but more than anything, I just feel hollow. Reporter: She says her experience as an Afghan refugee, helps her see nuance in the world which is so often portrayed as black and white. I'm a Muslim, I'm a woman, I'm immigrant, I'm western and eastern. All those things are strengths. Reporter: She's also outspoken for a journalist. Because if you don't know how big the problem is, how the hell can you come up with a solution? Reporter: A trait she traces to the discrimination she experienced after September 11th, growing up in the united Kingdom. It wasn't just the fact that I was a Muslim. It was the fact that I was an Afghan. So I was going through school at the time. I was in high school. And I had chairs thrown at me. It was one of the things that made me a strong individual woman, and it was one of the reasons that I don't let anyone take my identity away from me. Reporter: She's written about the need for activism in the era of brexit and president-elect trump. Your reaction to brexit and now Donald Trump becoming elected? That's my reaction. It's a tumultuous time and it's easy to scapegoat it. So it becomes very, very important for people who think like me, who are kind of in my position, to speak up. Reporter: Even, it seems, when her own assumptions are challenged and she finds herself jumping to unexpected conclusions. She leaves Bulgaria to investigate traffickers targeting refugees fleeing Syria, locatings an admitted trafficker in Greece. He says he can provide anything his clients want, from women and girls, to new born babies. He brags did kidnapping a young Syrian girl. Do you not care about them as people? Reporter: But the conversation unexpectedly turns. He admits he's responsible but said that complicit cops and a corrupt legal system are more guilty. You know things have fallen to pieces when you're siding with a trafficker. I feel like I have no idea what's going on here. This guy is one of the worst people I've ever met. Reporter: But why would he talk? What does he have to gain? He explained coherently, there's bad people like him, but then there's the people who buy his product. Those are Normal folk, people who have jobs, wives, husbands, who are fathers and brothers. So who is the bad guy in that situation? Reporter: She identifies poverty as the underlying motivator for people who turn to illegal trafficking rings. Nobody wants to be a poacher, nobody wants to be a sex trafficker. They end up there. Given the right opportunities, given the right situation, people will choose good and will want to do good. Reporter: An optimist for sure. But also a realist when it comes to criminal markets around the world. There's one lesson in every blk market, and it's that you and I, we're culpable. Reporter: What message do you want people to take away from the traffickers? I want people to watch the traffickers and feel responsible for the world around them. Reporter: For "Nightline," I'm linsey Davis in New York. Watch the double episode season finale of the traffickers this Sunday at 10:00 P.M. On fusion, or get the season pass on iTunes now.
This transcript has been automatically generated and may not be 100% accurate.