That's the name of a new book by Jake Halpern coming out in October. The New York Times has an excerpt on their site. If the excerpt is anything like the book, it's going to be gripping.

What's even cooler is that someone actually created a video game based on the book. Or at least on the debt collector business part of the book. You can play as a debtor or a debt collector and see the story through. It's web-based image-and-text but really well done (just some minor innacuracies).