The flow of illegal drugs into New Zealand has escalated in recent years. For frontline Customs staff, detecting criminal importers is a game of cat and mouse. Anna Leask reports.

The silver measuring bowl sits

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Drug Zealand - what's coming in, and from where

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NZ's most popular drugs

Kiwis 'like our uppers'

Under their eyes

Gadgets galore - a game changer for Customs

Crime pays - how Customs funds drug testing

Never ending - the war on drugs

Drug mules rampant at NZ borders

Cat and mouse - Customs vs the world

In numbers