Russell and Sorenson scramble to close a stabbing case so that Kirkendall's son, a witness to the incident, doesn't have to testify; Greg and James slog through a case where a homeless man was beaten to death; PAA John tries to help out an increasingly out of control Dolores Mayo; Andy, Sylvia and Lt. Dornan join forces to avenge a man who was conned into confessing to a crime, tortured in jail and murdered there; and Russell is tempted to drink.