hammarbtyp: "I'm pretty sure the reality is that most master criminals are more brawn than brain"
You're probably right, but it depends on your definition of "master criminal". Some would claim that many criminals exist in the financial services industry, Bernie Madoff is an example that springs to mind, then there were the ENRON high-ups, and of course Ernest Saunders who was convicted of manipulating the share price of his company (and is the only known person to recover from senile dementia after he left prison).
Maybe it is the thick ones who tend to get caught.