A white woman, Laura di Biasi, shoots two black men in a crowded subway. The shooting at first appears to be self-defense, but further investigation shows that the motive may be revenge. Logan and Greevey argue about di Biasi's guilt, especially after learning that the dead man has a substantial record, and the living one cannot control himself in court. Laura di Biasi tries to make her case to Robinette, but he distances himself from the issue. Stone has trouble with the case, both in dealing with di Biasi's public defender, Shambala Green, and with the fact that the district attorney's office is divided over the issue.