Goldman Sachs: the bank that rules the world

CNBC investigates one of the most powerful banks on Wall Street. It goes behind the scenes and explores its history and corporate culture. It also looks at a number of controversies that have clouded the company due to its role in the 2007 financial crisis. The biggest bank of Wall Street is now the subject of both professional admiration and public scorn. CNBC's Dave Fabre explores how the history and culture of this financial powerhouse has set the stage for controversy and a fight to save its reputation.