Journalist Mariana van Zeller and her husband Darren Foster go undercover to see how guns fall into the hands of criminals in a dangerous journey that takes them all the way to an underground tunnel in Mexico.

In this episode, investigative journalists Mariana van Zeller and Darren Foster explore the synthetic drug craze in America.

In this episode, investigate journalists Mariana van Zeller and Darren Foster journey to some of the country’s most haunted locations and examine America’s obsession with the paranormal.

In this episode, investigative journalists Mariana van Zeller and Darren Foster explore firsthand the little-seen world of America's homeless youth.

In this episode, investigative journalists Mariana van Zeller and Darren Foster explore the debate between the animal agricultural industry and the animal rights movement.

In this episode, investigative journalists Mariana van Zeller and Darren Foster explore the world of sex trafficking in the United States, going undercover into the treacherous world of America's prostitution tracks and illegal massage parlors, and coming face to face with the traffickers themselves.