Border Security: Canada's Front Line

A distinctive bag has officers seeing double; a photographer misses the big picture; three strikes and an American trio may be out; red threads make for red flags in the mail office; a heavily-modified truck causes concern; and officers ensure every dog has its day.

A traveler's books are problematic; a tourist runs into trouble; a shipment of cosmetics contains an unexpected item; a family are caught with a loaded arsenal; a 747 is searched; and a vagabond climbs a freezing mountain.

A traveler ingests an unusual substance; a Thai vacation guide offers out-of-the-ordinary information; a snowboarder is busted by his photo gear; a car dealer struggles with the truth; a New Jersey man's past catches up with him.