The billion-dollar scammers who will steal your life savings

A global scamming network has robbed ordinary investors of more than a billion dollars. BBC Eye identified a shadowy network of businessmen who appear to be behind it.

First, you hear a phone ringing. An elderly man answers.

The caller introduces himself as "William Grant", from the trading firm Solo Capitals. He says he has a "great promotion" to offer.

The elderly man sounds vulnerable and confused. "I'm not interested, I'm not interested," he says.

But William Grant is persistent. "I only have one question," he tells the old man.

"Are you interested in making money?"

Jan Erik, a 75-year-old pensioner in Sweden, is about to get scammed - again. The call was made from the offices of Solo Capitals, a purported cryptocurrency trading firm based in Georgia. The recording is hard to listen to - not only does the elderly man, Jan Erik, sound muddled, he tells the caller he has already lost one million Swedish Krona (about £80,000) in trading scams.