Cardboard packaging hides a secret; a laptop bag conceals narcotics.

A cartel hitman is extradited, and 50 gallons of moonshine is intercepted.

A couple from Mexico arrives with candy unfit for children's consumption.

A new officer makes one of the biggest drug busts her bridge has ever seen.

Officers see a trend of narcotics being smuggled inside car dashboards.

An officer catches a woman trying to use a forged visa to get into the US; a rookie officer takes part in a major cocaine seizure; officers suspect a traveller claiming to be a pastor on the way to a religious conference may not be who he says he is.

K9s save the day, identifying gallons of paint and beer bottles filled with more than the officers bargained for; a man with a warrant for his arrest is concealing something suspicious; officers question the intentions of a chatty traveler.

An elite team prepares for the extradition of a cartel Sicario, or hit man wanted for murder in his home country; with the sale of guns and ammo strictly controlled in Mexico, cartels turn to America for the weapons to wage their wars.

Agriculture specialists deal with cattle arriving without required seals.

Officers find a surprise in a car that hasn't crossed the border before.