A professor at Georgetown University Law Center, Adam J. Levitin, has a 78-page review essay in the Harvard Law Review under the headline "The Politics of Financial Regulation and the Regulation of Financial Politics." It reviews a series of books about the financial crisis, including the ones by Sheila Bair and Neil Barofsky, passing along some of their juiciest details and pondering how to prevent financial regulators from being "captured" by the institutions they regulate.
It's a long article and I don't agree with it entirely, but I though it was worth my time. I particularly appreciated the parts about how "The United States continues to have one of the most politically insulated financial regulatory systems in the developed world...American financial regulation and monetary policy has moved from being the province of electoral politics in the nineteenth century to now being the preserve of technocratic New Deal-era independent agencies."