In 2014 a brilliant Oxford graduate called Dr Ruja Ignatova promised to revolutionise money and make people rich in the process. She launched OneCoin, an exciting new cryptocurrency that she promised would not only earn its investors untold fortunes, it would change the world. OneCoin swept the globe - becoming one of the fastest companies to make $1 billion in revenue. But by the end of the year Ruja Ignatova had disappeared, along with the money ... About one of the biggest scam of the 21st Century.