The corner of Sarah and Olive looks almost nothing as it did 25 years ago when a 19-year-old drug dealer named Quintin Moss was gunned down from a slow-moving car. The boarded-up houses have been replaced by a new townhouse development marked by sleek stone gates; the drug dealers and prostitutes are gone.

And the man convicted of the killing, Larry Griffin, was executed 10 years ago.

Yet the city's top prosecutor has decided to re-investigate the murder as if it just happened, out of new concerns that the wrong man may have been put to death for the crime.