TV Guide National Geographic Channel

The Inca Empire reaches its golden age, with Cuzco overflowing with gold and the legendary wealth that inspired the legend of El Dorado.

After a century of power, the Inca Empire collapsed in less than a decade to Spanish conquistadors. Civil war, betrayal and cunning tactics sealed their fate.

Is King Tut's mask his? Was America balloon-bombed? Is a clay bottle magic?

Why is one moai bearded? Are flying saucers real? Can a wooden bucket heal?

Is a bog body a murder? Can physics find illness? Who is on an Egyptian bust?

A rock solves murders; metal ears repel aircraft; the Sphinx wore a false beard.

Two DEA agents join a team that is working on a major cocaine bust in Bogota, Colombia's El Dorado airport as they risk their lives to take down the cartels.

The DEA's specialized team of submarine hunters goes to Cartagena, Colombia, to intercept a cocaine-carrying sub before it can get to open water.

Airport workers go above and beyond to find a cat who escaped onto the runway upon landing.

Airport workers reunite travelers with their missing items, including a collection of old photographs with their owners.

A team in Denver and Salt Lake City helps reunite travelers with lost items like Native regalia, a taxidermy rat and a championship ring.

Airport workers reunite travelers with their missing items, including a collection of vintage rackets and a dog toy.

Lost-and-found workers desperately try to find the owner of a fanny pack as it contains much-needed medication and $3,000 in cash.

A woman is arrested while trying to smuggle cocaine while traveling with her 2 young children; drug cartels are looking for new carrier profiles in the elderly.

A desperate woman uses her own child as a decoy while she smuggles cocaine, but authorities are able to determine her deception and detain her.

Anti-drug agents and law enforcement officers in a Peruvian airport encounter several suspects and accomplices who are accused of smuggling crimes.

Specially made drinks infused with cocaine are uncovered by careful investigators; a person travelling with specially made suitcase is caught hiding cocaine.

Law enforcement officials confront a smuggler who is traveling with her young daughter; police teams discover smuggled cocaine in packages of food.

Anti-drug police teams discover stashes of hidden inside jackets and in metal blocks; law enforcement officials encounter a pregnant smuggler.

As anti-drug police attempt to catch smugglers in the act, they uncover cocaine and other substances hidden in suitcases and ingested as capsules.

An elderly woman attempts to smuggle illegal substances in her hand bag; a suspected accomplice to a smuggling group is tracked by investigative authorities.

A close look at Detroit and all of the drug-related incidents that occur there on Halloween, which is a major drug-fueled holiday.

The influx of heroin and benzodiazepine pills in Boston is examined, with emphasis on how the drugs move from the Dominican Republic; bonus features included.

The police force focuses on combating the sale and use of heroin as Pittsburgh's streets are flooded with the drug; bonus content included.

A close look at the cartel connections and gang members from Dallas who reach out to supply the drug demands of addicts in East Texas.

As New York City counts down to New Year's Eve, drug gangs increase their workload to meet the high demand for their products; bonus features are included.

A close look is taken at how Mexican cartels have cornered the meth market through a network of lab workers, hitmen and smugglers; bonus content included.