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

Biosecurity's Iko goes bananas over an airport find and Rotorua police team Luke and Skudder hit the trail after a disappearing speed demon.

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.