A construction site that is a battleground between shady outfits led by African Americans and Puerto Ricans becomes a murder scene when the number-two man from the latter coalition is shot to death. Andy and Bobby find out he was a good man who was targeted by a wide-ranging group of scummers, and they are not able to arrest anyone but a perfect patsy. Andy is disgusted when PAA Geri wants to talk to him, but she has news about a man's death. Diane and Jill are assigned to the case and learn the victim was close to Geri and into domination and S&M, but it falls to Andy to see through Geri's facade and help her avoid jail time. Elsewhere, Diane and Bobby's relationship finds a new solid ground on which to continue, and James and Gina have their first sleepover.