Palmerston North Delta team Shane and Luke track down wanted men; Corrections drug dogs Dug and Sparky sniff out trouble at a prison refurb yard; and Customs dog Flo cashes in big time.

Wellington Delta team Sam and Arlo confront an aggressive male connected to a machete attack, and Customs drug dog Latte discovers a colourful package with even more colourful contents.

Customs drug dog Zaria sniffs out drugs at the International Mail Center and Mena the penguin tracker shows off her work at Kaikoura.

Delta team Paul and Falon deal with a carjacker; drug dog Oscar locates drugs on a prison visitor; and DOC tracking dog Fern sniffs out young Kiwis gone bush.

Customs dog team Ian and Yardie foil a foil wrapped plot to get drugs into the country and Auckland Council detector team Kerryn and Pip identify a microscopic but deadly pathogen.

Delta unit Kieran and Vader vamoose after a fleeing driver in Hamilton, drug-seeking Yarra is in pursuit of something unsanitary and Biosecurity's Kelsie produces a fresh find.

A dangerous driver has Palmerston North Delta team Brendan and Deja on the run, Customs dog Willow seeks out hard drugs and hard drives, and Corrections pooch Spark beats one search to the punch.

Corrections dog Ciggy searches the cells for cigarettes at Waikeria Prison while Customs drug dog Rajax finds what he's trained to detect on the International mail belt.

Wellington Delta team Josh and Iko track down an offender after an attempted burglary, and DOC detector dog Neo goes in search of Weka in the Bay of Plenty.

Christchurch City Delta team Regan and Kosmo track a fast-running car thief into a fast flowing river, and in the rugged Northland bush two kiwi jokers and two dogs look for a kiwi bird.

Wellington Delta team Josh and Iko run through the rapids to a rapid response, while Corrections dog Gemma smashes her first big time search for tobacco.

Palmerston North Delta team Sam and Zinny have their work cut out for them as a fleeing driver keeps on running, fortune favours the bold for Customs drug dog Latte and there are sad goodbyes and new beginnings for Corrections drug dog Radar.

Wellington Delta duo Sam and Arlo chase down a bunch of scarpering school vandals, and Customs drug dog Zion busts a package wide open.

Wellington patrol dog Quita chases car thieves, drug hunting Anika makes a discovery on the Customs mail belt, and Corrections canine Wally is on prison grounds.