Five years on from the worst ever financial crash, a new landscape has emerged. The rules of the banking system are being re-written, and bankers, politicians and ordinary men and women are asking fundamental questions about how they should operate. Investigating recent revelations which have shattered trust in the banking system, the series asks whether this new damage to our banks' reputations has had an impact perhaps greater than that of the financial crisis itself. Combining rigorous journalism with access to key players, these films ask what our bankers, regulators and policy-makers have learnt since 2008. And, in the process of making the City and Wall Street pay the price for weaknesses in regulation, leadership and ethics, is there a danger of inflicting as much suffering on the wider economy as on the banks? With gripping first-hand accounts from banking insiders, regulators and politicians this film tells the story of two recent multi-billion pound trading disasters that rocked the City. It shows that some bankers are still taking reckless risks, five years after the crash that brought the world's economy to its knees. Risk is the engine of growth but reckless risk can have catastrophic consequences, especially in volatile times like the turbulent financial world of today. The film charts the thirty-year effort to manage financial risk through mathematical modelling and shows how this can encourage some traders to behave as if they have mastered risk altogether. With Nobel laureate Daniel Kahneman, former JP Morgan executive Bill Winters and regulator Martin Wheatley.