On a winter morning in 2015, an electrician is murdered in a quiet Amsterdam suburb.

It looks like an assassination, but there's no motive.

The Dutch police can't figure out what's going on.

Eventually, the killing leads investigators

into a web of cocaine loads, money laundering and shadowy government agencies that stretches from Dublin to Dubai.

At the centre is a cocaine super cartel and a secret proxy war between democracies and dictatorships.

I'm Miles Johnson and I'm an investigative reporter for the Financial Times

and I've always really been interested in the ways that

crime and business me because they always me because crime is a business.

The global black market it's worth trillions of dollars.

It's this vast ocean of shadow cash. We know it's there and we can feel its impact, but it's often hard to see.

That makes reporting on it pretty tough, but it's often hard to see. That makes reporting on it pretty tough, but occasionally you can

get a glimpse of what's happening under the surface. A man in his 50s was shot with one bullet

in the head. These are not, you know, bedtime stories.

This is getting real.

There's always an element of luck.

You don't know if somebody behind that door has a gun.

It became clear to me as a prosecutor that what they

were doing is they were using the fighters as a way to move money through the

system. We were locked Africans from South America looking to launder their money.

And then sometimes, if you keep digging,

you start to see a much bigger pattern.

...