Last year an anonymous person leaked a horde of documents to Süddeutsche Zeitung from Mossack Fonseca, a Panamanian law firm that sells anonymous offshore companies around the world.

Something like 214,000 letter box companies are involved, and with the backing of the International Consotortium of Investigative Journalists – a large scale colloboaration began across international borders to delve into a huge web of financial intrigue.

If you’re interested in the sheer scale of the Panama Papers leak give this a watch this.