Dr Ruja promised financial revolution. And then, two years ago, she disappeared. Why?

Dr Ruja promised financial revolution. And then, two years ago, she disappeared. Why?

The Missing Cryptoqueen is an eight-part series for BBC Sounds, with new episodes every Thursday.

Presenter: Jamie Bartlett

Producer: Georgia Catt

Story consultant: Chris Berube

Editor: Philip Sellars

Original music and sound design: Phil Channell

Original music and vocals: Dessislava Stefanova and the London Bulgarian Choir