I also object to the idea that miscarriages of justice in death penalty cases are a "new phenomenon". This isn't a new phenomenon. It's just pithy, enough to capture the front page.
(1) "Appointed as his advocates were a general practice lawyer who never had handled a major felony case and a veteran who had a heavy case load." (2) "The presiding judge said that the Constitution guarantees a defendant a lawyer, but it does not guarantee that the lawyer must be awake." http://www.secondclassjustice.com/?p=196
I have bad news. This is a "typical" death row victim story. There have been several others like him.
http://en.wikipedia.org/wiki/Cameron_Todd_Willingham
http://online.wsj.com/article/SB1000142405270230402380457556...
Over half the death penalty convictions in Illinois were found to be faulty.
http://deadlinethemovie.com/state/IL/index.php
There have been a total 18 innocent people exonerated on Death Row in Illinois. Illinois has executed a total of 12 people since 1976
Prosecutors have no incentive to convict the criminal. Any plausible convict will do.