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Mariana goes inside the world of contract killers.
Mariana delves into a new scheme called sextortion, where compromising photos are used to extort victims; while searching for the scammer who targeted a young American, she uncovers a scam culture even more terrifying than she had imagined.
The trafficking of human remains yields billions of dollars globally and remains clandestine; Mariana's investigation reveals the vulnerability of anyone to human remains trafficking.
Health care costs have pushed millions of Americans to the black market.
Mariana heads to the Congo to investigate the illegal trading of wild apes that has apes on the brink of extinction.
Mariana heads to Mexico to investigate the billion-dollar business of people-smuggling to the U.S., a system fueled by cartels and corruption.
Mariana tracks the illicit path of hashish from Morocco into Europe; a world of shadowy dealers, fast smuggling boats and endless wealth.
Mariana goes inside the dangerous, high-stakes world of illegal gambling to try and understand its allure, its growth and its dark side.
Mariana launches an investigation into a complex scam that targets seniors, tricking them into becoming drug mules.
Mariana's investigation into how gold mining is funding terrorism gets interrupted by a military coup that strands the team in Niger.