Clark is placed under arrest after police find heroin in his car; detectives search for clues when a woman is beaten to death with a cordless drill; a murder victim's obsession with clean living may have led to his demise.
In hopes of freeing Clark from jail, Sipowicz searches for drug dealers who might have a connection to Laughlin; McDowell and Ortiz investigate a series of rapes in a park involving a perpetrator who forced his victims' boyfriends to watch.
Sipowicz and Clark investigate when Julian Pisano is wounded in a shooting incident; McDowell and Ortiz assist a woman who doggedly pursues justice when she's conned out of $100; Clark grows concerned when his father stops returning his phone calls.
The detectives investigate the murder of a gay financier whose death might be tied to a marine; Medavoy and Jones search for answers when a strangler attacks a Russian mail order bride; Haywood feels threatened when a murderer's conviction is overturned.
As Andy and Connie prepare to finalize the adoption of baby Michelle, Frank Colahan's mom and dad show up. Connie sweetly and sincerely tells them they want the grandparents to be part of Michelle's life to the fullest extent possible.
A meek and mousy young woman is found beaten to death on the floor of her apartment. Her brother-in-law is very upset but not about her death--he was paying her money to use her apartment for an extramarital affair.
The detectives investigate the shooting death of a man whose brother is a registered sex offender; and when Captain Fraker's trial gets underway, Sipowicz worries that his own testimony may have harmed the prosecution's case.
Sipowicz and Clark investigate the death of a transvestite whom a friend insists was having a relationship with a married man; a surgeon's hand is badly cut during a robbery; and Rodriguez testifies in the Fraker trial.
The detectives search for clues when a group of perpetrators torture a man for no apparent reason; a woman reports her husband as missing, but Sipowicz and Clark suspect she's not being completely forthcoming; and Fraker testifies in court.
The detectives investigate the strangulation death of a former porn star; a thirteen-year-old boy holds the key in implicating his father in his mother's murder; and the jury reaches a verdict in the Captain Fraker trial.
The detectives investigate a strangulation murder that may be tied to one of Diane Russell's cases; Russell consults a doctor when she discovers a lump in her breast; Medavoy and Jones investigate an arson linked to two boys.
A woman survives the serial killer's attack, and her account prompts the detectives to focus on Carlin, his partner, and a bodyguard; Medavoy and Jones investigate when an off-duty officer kills a man; and McDowell comforts Russell during a biopsy.
Sipowicz and Clark search for two burglars who terrorized a retired cop and his wife; Medavoy and Jones assist an author who wrote a book on how to avoid paying income taxes; and Jones deals with Michael's father.