In the month that followed the bankruptcy of Lehman Brothers in September 2008, the world stared into the abyss of total financial collapse. The third part of the BBC's definitive series on the crash tells the extraordinary story of how politicians reacted, and asks what has been learnt from the entire calamity. Could it happen again? With unrivalled contributions from the key decision makers including US Treasury Secretary Tim Geithner, Gordon Brown and five other finance ministers, the programme pieces together the details of an extraordinary moment in history, when the world faced its greatest financial crisis. Series producer, Michael Tuft ; directed by Paul Mitchell ; narrator, Alex Jennings.

The series on the global crash examines the boom years before the bust. With testimony from many of the key decision makers who shaped our lives over the last two decades, including Gordon Brown, governor of the Bank of England Mervyn King, and an exclusive interview with former chairman of the US Federal Reserve Alan Greenspan, it charts how the financial bubble grew and grew. The programme explains how we changed our attitude to risk, learnt to live with debt and, above all, how governments stepped back from regulating any of it. At the heart of the story is Alan Greenspan, who for 20 years was one of the most powerful people in the world. In October 2008, weeks after the catastrophic collapse of Lehman Brothers, the man whose ideas influenced the world admitted he might have been 'partially' wrong. Series producer, Michael Tuft ; directed by Tim Robinson ; narrator, Alex Jennings.

In September 2008, the collapse of Lehman Brothers tipped the world into recession. A cast of contributors including national leaders, finance ministers and CEOs describe the tense negotiations in New York and London as the investment institution headed towards bankruptcy. Gordon Brown, Tim Geithner and Alistair Darling reveal the dilemmas they faced and the decisions they took. One year on, the programme explains why the collapse of one bank had such disastrous consequences for the world's economy. Series producer, Michael Tuft ; directed by Guy Smith ; narrator, Alex Jennings.