Border Security: Australia's Front Line - Season 21

A husband and wife from Vietnam come to claim a lost suitcase, but what's hidden inside we'll change their lives forever. Biosecurity officers bust a tour guide who should know better.

Two young woman from Malaysia have had their plane tickets paid for by someone they don't know. That's a red flag for Border Force and the investigation is stepped up.

Officers suspect a Brazilian man is lying to them and his answers aren't helping him. A Chinese student returning to Australia seems to be in a hurry and Biosecurity officers think they know why.

A young man's bag tests positive for a narcotic and his fiancée is definitely not impressed with what he reveals next. Officers aren't convinced the cans in a parcel from Malaysia contain soup.

A drug detector dogs sits at a woman's bags and officers need to investigate further. A nervous passenger attracts the attention of Biosecurity and what he's hiding may be deadly.

Two brothers from Thailand claim they're just tourists but after talking to their sister, Border Force discovers something that makes their story likely to be a lie.

A nervous man says he's here to visit his wife for their wedding anniversary but what's in his luggage may spell the end of his trip. An officer's skills stop a drug delivery through the mail.

A man from Amsterdam says he's here for a holiday, but his suspicious travel itinerary through China and an empty suitcase seem to tell a very different story.

A man's bag tests returns a positive swab for drugs after a trip to Thailand. An elderly Vietnamese woman is hiding something and biosecurity officers are determined to find it.

A passenger at Melbourne Airport is concealing a massive illegal import in her luggage. Her tears won't stop officers discovering what she's up to.

An unemployed man frequently travels business class and when officers check out his past, it raises even more questions and a passenger is carrying very risky items in his luggage.

What officers find on a Bulgarian visitor's phone could mean an abrupt end to his holiday. Two fruit pickers from Tonga have failed to declare prohibited items.

A woman claims she's back in Australia to bring her friends Taiwanese snacks, but officers discover a shocking secret when they delve a little deeper.

A truly shocking X-ray of a package at the mail centre has the wildlife team desperate to get it open before it's too late. Two woman coming from China refuse to unlock their bags.

Hundreds of packages of illicit substances are stopped at the International Mail Centre every week and today is no exception when drug detector dog Vulcan makes an amazing find.

Two men come to the attention of Border Force when they are caught trying to avoid inspection of their suitcases. A couple from China don't want to pay the fine for all their prohibited food items.

A backpack sent by mail catches the attention of officers when none of the declared items look anything like they should. Closer inspection reveals a large haul of narcotics.

A martial arts fighter claims he bought a bottle of cologne at a market in Thailand but Border Force know there's more to his story. A couple from Bhutan have a prohibited item in their suitcase.

A woman acting suspiciously is stopped at the border and officers are shocked by what she's hiding in one of the programs most bizarre and unusual busts.