A violent criminal shoots a police officer outside his station and then goes on a rampage. A chase erupts through the streets ending with numerous wounded and dead. The criminal is captured and dragged into the station, because there is also a sniper shooting at the police, where he consequently dies.

The repercussions of Hopkins' death (the violent criminal from the pilot) in the station continue as the Internal Affairs department investigate and Hopkins' sister brings in her own lawyer to find out who 'murdered' her brother.

A Hacidic Jew and his grand daughter are mugged. A militant Jew organizes a vigilante group to find and punish the assailant, believing the police will never find him.

The O'Donnells' father is murdered, the son thinks he was killed by one of the Westbrook boys, their next door neighbors and constant adversaries.

A woman comes into the station to report that she is being harassed by a group of clowns living next door to her. She tells them that they make too much noise all through the night and can often be seen participating in orgies through their windows.

Santoro's brother-in-law is arrested for possession of stolen goods, kept in a lock-up that has Santoro's name on the lease, which could cause problems for Santoro.

Two gay men are arrested for brawling in the street. By the time they reach the station house their injuries seem to be much worse and one of them accuses the two officers who brought them in of police brutality.

Terry begins his undercover assignment. Kevin Patrick has trouble coming to terms with his disabling injury and Jonas takes up his new post.

The ex-wife of McKenzie, the prosecutor who helped Jack, is found dead in her apartment. 'Woody' is the main suspect and the detectives investigating think he may have hired a killer. Looking for help he calls Donovan to help him.

Terry's undercover work is beginning to worry Jimmy. Joe has it in for Terry, because Jimmy arrested him when he was younger. The bank job is going down soon and Joe could be planning to set Terry up.

Heagan's disciplinary hearing, over the gay beating, takes place and Phil has to testify against him. Even so with Pittorino now changing his testimony it looks like he could go free.

A young girl has a man expose himself to her near her school. Her father is a court officer and an old friend of Captain Jonas'. He wants something done about it and asks Jonas to make sure his men find this pervert. As the number plate of the suspects car was taken this is easily done but the girl cannot positively identify the man. Without any evidence the man is freed, much to the father's disgust. Not long after this Jonas is personally called to a crime scene where his friend is found, with the dead body of the released suspect.

Clem and Hector arrest a prostitute for possession of drugs, Hector recognizes her as being one of the clowns arrested previously and wants to help her, against Clem's advice. She wants to give up the name and address of her supplier for her freedom. No one is quite sure whether or not what she is telling is the truth but agree to look into it anyway. Jimmy is partnered with Ray MacElwaine, a new officer just transferred in from another precinct, investigate a number of robberies involving the theft of collection jars for a home for alcoholics.

Jack plans to marry Elena, an eastern European woman he met a short time ago, to help her with her immigration problems.

After Jack and Clem get into a fight over Elena and Nona the hostilities between them rapidly grows.

Donovan is forced to reveal his secret work to the rest of the precinct before it becomes common knowledge. His fellow officers have differing reactions to this news.

Donovan's dad comes back to town for heart surgery, having not even told his son that he had had a heart attack.

Elena, Jack's ex-girlfriend, is found dead in an alley, shot three times. The prime suspect is a Latvian businessman who she had often been seen with in a coffee bar.

A man comes into the precinct station to tell the sergeant that his boyfriend has a gun to his dog's head and is threatening to go on a rampage.

Ann-Marie starts her first day as a detective and begins by organizing a raid on an apartment where an informant has told her two men are making bombs.

An arrested drug dealer dies in a cell in the station house. The coroner determines that he died from strangulation, which puts Doyle in a jam as he was the arresting officer and was supposed to have kept an eye on his prisoner.

A member of the Latin Queens, a female gang, is found dead in her apartment building. Suspects are brought in, including a member who has been working undercover for two years.