They dreamed of becoming Croesus thanks to the OneCoin cryptocurrency. Some 3 million investors hoping to make a quick buck fell for the sirens of a Madoff-style scam, a giant Ponzi pyramid with promises of miraculous returns. This financial scandal, orchestrated by 42-year-old Bulgarian Ruja Ignatova, involving Bulgarian mafiosi, Arab sheiks or even former spies, allowed her to get hold of $4 billion before disappearing without a trace in October 2017. Tracked by Europol, she was also included in June on the FBI’s ten most wanted list of fugitives. The “crypto queen” was selling to her followers a rival currency to bitcoin that would soon sell at high rates and end the power of the banks.