Is she dead or alive? Ruja Ignatova launched a fake cryptocurrency that conned investors out of more than $4 billion. Then, with the police on her trail, she vanished. A years-long investigation has led BBC journalists down a rabbit hole of scams, spies and organised crime – including the new allegation that Ignatova may have been murdered by the suspected king of the Bulgarian underworld. But what is fact and what is rumour?

Katya Adler is joined by Rob Byrne from the BBC podcast “The Missing Cryptoqueen”, and Storm Theunissen from BBC Eye Investigations, who directed the Panorama film “The Missing Cryptoqueen: Dead or Alive?”

TGS is part of the BBC News Podcasts family. The team that makes The Global Story also makes several other podcasts, such as Americast and Ukrainecast, which cover US news and the war in Ukraine. If you enjoy The Global Story, you may well like some of our other pods, too. To find them, simply search on your favourite podcast app.

This episode was made by Peter Goffin and Alix Pickles. The technical producer was Hannah Montgomery. The assistant editor is Sergi Forcada Freixas and the senior news editor is Sam Bonham.