Border Wars

Agents try to identify the body of a young man who drowned while trying to cross the Rio Grande. Later, officers crack down on a human-smuggling operation and raid a safe house containing more than 20 illegal immigrants.

A rookie agent and his canine partner uncover more than 1000 pounds of marijuana hidden in an 18-wheeler. An Ecuadorian woman and her daughter are rescued after being abandoned by smugglers. A group of illegal crossers send agents on a four-hour chase..

More than $600,000 worth of crystal meth is found hidden in an SUV. A car filled with firearms and ammunition tries to cross the border checkpoint in Hidalgo, Texas.

Agents search for nine missing people in the Rio Grande. A man wanted for murder tries to cross the border in Hidalgo, Texas. A group of suspected drug smugglers are tracked through the night.

The California Border Patrol seeks out corruption within its own ranks. Rookie agents pursue illegal immigrants. Officers intercept a huge stash of drug-cartel money.

Agents stop a truck trailer packed with 30 illegal immigrants. A huge payload of marijuana is seized.

Agents stage a sting operation and infiltrate a human-smuggling operation. Hidden narcotics are uncovered in a car passing through California's San Ysidro Port of Entry.

A woman tries to sneak across the border in hopes of reuniting with her husband and son. An investigation of a human-smuggling ring leads to a tense standoff.

Agents conduct a citywide sting in San Juan in an effort to bust gang-affiliated drug dealers. In Miami, deportation officers deal with a complex case of a family man facing deportation.

Dismantling North Miami Beach gangs; corrupt employees on a cruise liner; a drug load off the coast of Puerto Rico.

Examining the Sept. 30, 2010, death of American tourist David Hartley, who was allegedly shot by Mexican pirates during a sightseeing trip on Falcon Lake near the Texas-Mexico border.

A gang member becomes an informant after he's apprehended in Miami. A marijuana grow house is raided by undercover agents. The U.S. Coast Guard intercepts a boat carrying more than 500 lbs. of cocaine and a strange mystery substance.

Border agents pursue a car filled with suspected illegal immigrants. Later, the SWAT team raids a suspected heroin stash house. A spare tire stuffed with hundred-dollar bills is discovered by officers.

A search for suspected illegal immigrants turns into a rescue mission when they get disoriented in the sweltering heat. A SWAT team busts a suspected coke house.

A truck with canned jalapenos is found to have marijuana; a human smuggler will not give up stranded immigrants; agents raid a suspected stash house.

A stolen vehicle is abandoned after it flips over during a high-speed chase, and a huge load of marijuana is found inside

Agents beef up security in Miami in preparation for Super Bowl XLIV, while also patrolling the rest of the city for drug trafficking and illegal immigration.