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HSI partners with Colombian National Police to dismantle illegal gold mining operations; CBP thwarts cartel activity in Texas.

Mariana launches an investigation into a complex scam that targets seniors, tricking them into becoming drug mules.

Mariana dives into the world of international scamming to understand how it all works.

Mariana embeds with a crew of crypto scammers who show her how they make millions of dollars in mere weeks.

Mariana heads to a Southeast Asian hotbed of scamming, where criminal organizations are holding thousands of hostages and forcing them to scam.

Mariana investigates the dirty business of bogus addiction treatment.

Mariana van Zeller goes undercover to become the target of a romance scam.

HSI money laundering stings; CBP's largest drug seizure in LAX history.