Meet the Lazarus Group, a shadowy cabal of hackers accused of working on behalf of the North Korean state. It's claimed that they form one of the most dangerous criminal enterprises on the planet, having stolen more than $1bn in an international crime spree. Their targets allegedly include central banks, Hollywood film studios and even the British National Health Service. North Korea denies the allegations, saying the accusations are American attempts to tarnish its image. In this staggering, global investigation, award-winning journalist Geoff White examines how the hackers have harnessed cutting-edge technology to launch a decade-long campaign of brazen and merciless raids on its richer, more powerful adversaries. It's not just money they're after. The Lazarus Group's tactics have been used to threaten democracies, gag North Korea's critics and destabilize global peace.