Dr Ruja Ignatova persuaded millions to join her financial revolution. Then she disappeared. Why? Jamie Bartlett presents a story of greed, deceit and herd madness.

Learn the language you need to understand news stories in English. Find more at bbclearningenglish.com Follow us at bbc.co.uk/learningenglish/followus

Learn English grammar with these short programmes. Each episode explores a new piece of grammar you need to improve your English. Find more at bbclearningenglish.com Follow us at bbc.co.uk/learningenglish/followus

Build your English vocabulary with these short programmes. Each episode explores a new topic to improve your English. Find more at bbclearningenglish.com Follow us at bbc.co.uk/learningenglish/followus

Everyday expressions and real English conversations to help make your everyday conversations easier. Find more at bbclearningenglish.com Follow us at bbc.co.uk/learningenglish/followus

Learn and practise useful English language for everyday situations. Find more at bbclearningenglish.com Follow us at bbc.co.uk/learningenglish/followus

Improve your English with these short dramas and stories. Find more at bbclearningenglish.com Follow us at bbc.co.uk/learningenglish/followus