Homicide Squad Detectives Lennie Briscoe and Ed Green investigate the death of Brendan Donner, a New York City baseball fan who went after a still-in-play foul ball during a crucial game. He's been hounded by irate fans ever since and it even led to the break up of his marriage. Someone broke a liquor over his head in a bar and fingerprints lead them to Walter Grimes, someone who was released from from prison just three months ago. Grimes had been released after 20 years in prison when DNA exonerated from the crime for which he had been convicted. There's little doubt that he committed the crime but his defense lawyer Rodney Fallon argues that it was his lengthy incarceration, for a crime he did not commit that conditioned him to be violent. McCoy tells the detectives to look into Grimes past for any criminal activity and they start with the crime for which he spent 20 years in jail.
—garykmcd