TV Guide National Geographic Channel Saturday

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.

The Search and Rescue Helicopter looks for a missing girl on Bonaire, and the Coastguards take on the fast boat drug smugglers.

The Coastguards intercept a boat full of refugees and the Search and Rescue helicopter tries to rescue the crew of a sinking trimaran.

The Coastguards perform a routine drug check on a party boat; a difficult interception with a drug boat challenges the crew of HNLMS Holland.

As a Coastguard plane searches for a missing fisherman, the Coastguards trace smugglers tracks and stumble upon a remarkable discovery.

The Royal Navy orchestrates a spectacular drug bust, and the Coastguards investigate some suspicious-looking people in the marina.

The Search and Rescue team assists a boy who may have broken his back and a boarding team intercepts a boat of refugees.

The Coastguard rescues a Swedish sailboat that went missing.

Homeland Security Investigations organize money laundering stings; Customs and Border Protection has its largest drug seizure in Los Angeles Airport's history.

HSI runs a human trafficking sting at a Kansas City hotel; CBP in Philadelphia hunts for a passenger suspected of making terroristic threats in the U.S.

Customs & Border Protection in JFK International Airport and San Diego Homeland Security Investigations tackle fentanyl crisis on opposite coasts.

HSI helps the Colombian National Police take down an illegal gold-mining ring; CBP finds an almost $1.5 million cartel drug haul at the RGV port in Texas.

U.S. Customs and Border Protection's K9s sniffs out hidden cash; U.S. Department of Homeland Security Investigations intercepts a $2 million drug deal.

A Homeland Security stakeout leads to nearly $500K of meth & fentanyl in San Diego; Customs finds concealed cash and a carload of cocaine at the El Paso border.

Air and Marine Operations hunts for a boatload of cocaine; U.S. Customs and Border Protection

Homeland Security Investigations performs an undercover drug sting; the U.S. Customs and Border Protection finds cocaine in the Rio Grande Valley.

30 kilograms of cocaine bricks are found on the same flight; a cocaine carrier relates a tragic story.

Officers discover two smugglers on the same flight; drug capsules are discovered taped to smugglers' bodies; authorities uncover false compartments.

Authorities discover cocaine-lined bags in two different cases; officers find cocaine disguised as packets of powdered hair bleach.

Authorities take part in one of the largest cocaine seizures in years; branded cocaine is discovered; officers find counterfeit goods.

30 kilograms of cocaine bricks are found on the same flight; a cocaine carrier relates a tragic story.

Creative efforts to smuggle drugs out of a busy airport in Colombia are shown, and officers comment on the unexpected lengths that some people go to.