Russell worries about her mother's pending grand jury trial for the intentional murder of her father. Meanwhile, Sipowicz and Simone search for the killer of a mobster's son, that reveals a family affair. The pompous lawyer of a suspect in another murder case impedes Medavoy and Russell's investigation and the erratic behavior of son of the victim doesn't help much either. Also, Martinez and Lesniak investigate another murder case that may be connected to Sipowicz and Simone's murder suspect who now may be on a killing rampage.

Simone and Russell investigate two stickups held at ATM's where they get a line on a possible suspect and then use Kirkendall to appeal to the suspect's mother to help them reach out to him. Meanwhile, Medavoy attempts to sort out a case where he can't determine if there really is a twin when a man comes to the station to report that his twin brother, Pete, has threatened violence against his former girlfriend. Also, Sipowicz contends with a medical problem involving his prostate while helping Simone and Russell and he is less than forthcoming with what his doctor has told him about his condition. Also, a new administrative aide, named Delores Mayo, comes to work at the 15th Precient as Naomi's replacement.

The detectives investigate the smothering death of an elderly man married to a voluptuous woman in her 20s; and a state judge pressures Medavoy and Jones to find out who poisoned her mother.