I don't know what the other reviewers was watching but I was bored to death with this one. The 2 most hackneyed plots in TV crime drama are 1) the black man on death row or trial for murder who is really innocent and 2) one of the main cast members accused/arrested for murder and, despite a mountain of evidence, is exonerated by the end of the episode. Credit to the writers for managing to squeeze both cliches in the same episode. The ending was sooooooo predictable there was no suspense whatsoever. To me this was virtually a "jump the shark" installment. If Dana Delany wasn't so pleasant to look at, I would have given up a long time ago.
BTW, in Philadelphia, 85% of the homicides are committed by blacks. When was the last time we saw this on this show?