The team travels to the Dominican Republic in the Caribbean to reveal the greatest secrets in the lives of the North Atlantic humpback whale; they witness a mother defend her calf in the ultimate ocean battle with a pack of orcas.
Learning how a population of bowhead whales, once hunted almost to extinction, is faring today; the team is the first to observe the feeding strategies of the deep-sea Greenland shark, an animal that can live for more than 400 years.
In the Azores, the team follows the elusive sperm whales to their hunting grounds a mile beneath the surface, where they discover the secret lives of these deep-diving whales.
The team is in the Azores to tag the sixgill shark and learn more about its nightly patterns hunting for food in the abyss; the team tags and retrieves valuable data, uncovering why this shark undertakes its epic journey from the depths at night.
The anti-drug police manage to circumvent the shipment of more than 77 pounds of cocaine bound for the African continent; customs agents try to uncover the strange journey of a pregnant woman.
The Federal Police detect two passengers who could be traveling with drugs; immigration agents must use all their imagination to communicate and gain the trust of a group of passengers who enter the country under irregular circumstances.
The anti-drug police must discover what is hidden by two women who try to leave the country with suspicious objects attached to their bodies; the immigration agents must unmask the true motives of the trip of three foreigners.
A divorced couple deny traveling together, but carry identical bags filled with cocaine; when a bag containing a white powder tests negative for cocaine, police decide to dig deeper.
Agents at Jorge Chavez International Airport race to locate a suspect hiding in a surprising location; an arrogant smuggler with a stuffed suitcase has double the expected load.
Agents at Jorge Chavez International Airport detain a man with drugs in his suitcase who breaks down when speaking with his mother; a woman may be carrying cocaine-contaminated olives.
A mother with a drug-saturated package in her suitcase says she is also being sent to work as a prostitute; a man claims drugs taped to his body are for personal use; a long-lost bag contains cocaine.
Agents detain newlyweds smuggling cocaine on their bodies, a nervous woman has cocaine wrapped around her legs, and a designer bag has been strategically stuffed with drugs.