A Nigerian woman claims to be a fashion designer, but Customs officers don't think her story measures up. A sudden memory lapse could be a problem for a Polish passenger who has just travelled for 23 hours to visit his girlfriend. A mysterious box has Quarantine officers digging for answers.

An unhappy passenger pushes Customs officers too far. Immigration officers conduct a massive hunt for evidence in a huge operation to catch illegal workers. A doctor's wife suddenly feigns sickness after Quarantine discover undeclared food in their bags.

All the indicators suggest a Chinese passenger is smuggling drugs, but a surprise phone call leads to a manhunt. One tiny clue unveils a Malaysian passenger's hidden secret. A major threat to Australia's border is concealed in the image of a former South African President.

An extreme sport holiday vacationer is being questioned by Security Border Officers after displaying unusual behaviour. - Flavoured Drinking powder packages don't look quite right. - An intercepted message by Immigration Officers reveals deception from a travelling woman with a tourist visa. - A family gets to snack on declared food not authorised into the country, before being let through customs. An other passenger isn't as lucky.

Border Officers are surprised at what a passenger is packing, what they discover next leads them to investigate him further. - Border Officers take a closer look at a suspicious package containing a vacuum cleaner sent from Malaysia. - Immigration Officers suspect a traveller with a tourist visa is intending to work in the country illegally. - Quarantine Officers inspect the luggage of a passenger arriving from China and find a treasure trove of undeclared food items along with suspicious food packaging.

In this episode of Border Security Australia's Front Line, Immigration Officers received information that could help them foil one man's plan of illegally working in the construction industry; is this the right man? Is this pretty woman just a model? A boxing trainer from L.A. becomes aggressive towards Customs Officers.