Just picture it: under the cover of night, police detectives raid a clandestine drug lab in Melbourne belonging to an organised crime gang. But instead of picking through just the usual: beakers, wads of cash and perhaps the unmistakable acetone odour of ICE, they stumble on something else.

Boxes upon boxes – upon BOXES – of Lego.

Today, senior reporter Chris Vedelago on why your kids’ favourite toy has become the underworld’s new favourite currency, and why it’s so good for laundering dirty money.