When most of us think of the drama of global finance, we think of stocks and bonds. But commodities? Crude oil and wheat? What could be more boring?

That's exactly what the elite commodity traders want us to think. They don't seek the spotlight. But although they may have gone unnoticed, their impact has not. Prices of raw materials - of petrol, food and essentials - have exploded. How did such immense power and wealth end up in the hands of a few?

In this riveting book, CNBC reporter Kate Kelly takes us within their inner circle. Following a trail from New York to Dubai, from banks to regulators, she reveals the fullest ever picture of the men who gamble with our future every day.