I just finished The Innocent Man by John Grisham. He applies his storytelling skills to non-fiction -- the interlocking sad stories of a couple of men who were wrongly convicted of a rape and murder and exonerated eleven years later.
Personally, I liked this better than the lawyer thrillers like The Firm -- no chase scenes, no piles of money, no beautiful babes on the beach, just the slow and flawed investigation, the thin prosecution, the incomplete defense, and the years of suffering of a mentally ill man in prison.
Wrongful convictions occur every month in every state in this country, and the reasons are all varied and all the same -- bad police work, junk science, faulty eyewitness identifications, bad defense lawyers, lazy prosecutors, arrogrant prosecutors.
The book is in the library (or will be, as soon as I return it): KF224.W5535 G75 2006 at Good Reads.