A Polish father and son working for a mystery West African man, a Russian sailor-cum-cocaine smuggler and $130,000 buried in Auckland. Sam Hurley tracked a police investigation for more than 18 months and today can reveal the story for the first time.

Ryszard Wilk and his son Ralph arrived in New Zealand in September 2016, telling immigration officials they were here for a holiday. They're unlikely to have attracted much attention — it was a record month for visitors, with almost 250,000 holidaymakers stepping onto our soil.

They were due to spend up to 30 days here. But two days

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