Featuring a man caught smuggling cigarettes.
A passenger caught at Bristol airport with too many cigarettes admits to having done it for years, and the crew of fast cutter Searcher investigate mysterious pot-markers off the Cornish coast.
In Bristol, customs officer Ann catches three passengers with 87 kilos of tobacco worth thousands of pounds.
In Dover, a giant X-ray machine helps officers tackle industrial scale smugglers hoping to hide amongst the thousands of trucks flooding through the port each day.
A ton of cannabis concealed in a truck is discovered at Dover and an intimate search gets to the bottom of a suspected heroin smuggler at Gatwick.
Customs officers board a suspicious yacht off Cornwall and receive an angry welcome. In Dover, officers searching under a truck find an illegal immigrant hiding on top of the engine.
At Gatwick, officers get a tip-off and are on the lookout for a passenger previously charged with importing drugs by surgically stitching them into a live Labrador.