Laurie Holden, who played Andrea in The Walking Dead, doesn't just pretend to be a badass. She's the real deal in her role as a volunteer for Operation Underground Railroad, a human rights organization that targets sex traffickers. Recently she was part of a raid in Colombia involving 55 sex slaves.

This week's episode of Nightline follows the sting and shows Holden in all her real-life glory. The organization worked with Colombian authorities to stage a bachelor party with underage sex workers. When the traffickers agree on camera to to pimp out the underage girls and the money is exchanged, the cops move in to make the arrests.

During the ordeal Holden works with social workers to comfort the girls, who fear they're the ones who will be in trouble and that they won't be paid. Holden is clearly heartbroken when interviewed after the fact. But she should also be extremely proud of her work.

We have to tip Rick Grimes' sheriff hat.

Please enable Javascript to watch this video

[via Gawker​]