Our less than smooth criminals managed to out-fox and outlast their police pursuers for about four years, helped by suspect dealings. How did they manage it? Was it in fact the ultimate inside job? This time we dive deep into the bent security guard, the mouthy crook and the dodgy coppers as numerous investigations try to put a full stop to this crime. From the remote Argyle mine to the ateliers of Europe, this heist required brains, bluster and bravado to pull it off.