Interesting, clear, mostly zooming out from or in to old black & white images but I didn't have to read a book. The executive assistant to the warden and the chief investigator delivered good spiels -- and in color. A lot easier to believe than Prison Break because THIS stuff was true. And THESE were the good guys. All that in nine minutes. I found myself enjoying being educated.
While listening to the commentary tracks for Prison Break I had wondered about all the history of Joliet's prison, which the directors & actors had referred to but not actually explained. And now I've learned it. 'More fun than a drive through Will County. More illuminating than a stop at their visitor center. More edifying than a stay @ Joliet Correctional.