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 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.