What's So Funny?

In his classic caper novels, Donald E. Westlake turns the world of crime and criminals upside down. The bad get better, the good slide a bit, and Lord help anyone caught between a thief named John Dortmunder and the current object of his intentions. Now Westlake's seasoned but often scoreless crook must take on an impossible crime, one he doesn't want and doesn't believe in. But a little blackmail goes a long way in... WHAT'S SO FUNNY?