The "Panama Papers" sent shockwaves across the world by shedding a crude light on the secretive world of tax havens. Thanks to an anonymous source, what is arguably the biggest document leak to date has shown that top politicians, businessmen, celebrities and criminals from Iceland to Syria, from Russia to Argentina, from Pakistan to the UK, have gone to great lengths to hide their money in offshore accounts.
Bastian Obermayer, one of two journalists at Germany's Süddeutsche Zeitung who were contacted by the Panama Papers whistleblower, is our guest. Along with fellow journalist Frederik Obermaier, he has now written a book about how they broke the story.
He recounts how the scandal began and comments on the ongoing fallout from the leak.