An ill man is accused of killing his sister, but Simone suspects otherwise. Meanwhile, Medavoy and Sipowicz go under cover to recover a stolen Jewish icon. Sipowicz struggles to keep a secret.

A baby and a small child are shot and killed in a robbery. Sipowicz's bad mood hinders the investigation and causes a rift with Simone.

Greg and Andy consider going on a diet. Simone considers his feelings for Diane. A body in a trunk leads to a gun chase and the hunt for the killer. The squad greet a new PAA.

Det. Morrissey enlists the help of Andy and Bobby on his missing child case. Cotelli and Martinez tout for votes in the election for officer's rep. Medavoy and Sipowicz start their diet plans.

A 'Prince' is robbed of expensive paintings. Martinez gets his first case as Delegate. Russell goes under cover.

A dead woman, found in an alley appears to be another in a series of brutal rapes. Simone and Sipowicz investigate. The rest of the squad tries to find out why shots fired from a bus injured a woman and a child.

Medavoy gets a call from Abby, saying her girlfriend has been killed. He, Martinez and Kirkendall hunt the killer. Simone, Sipowicz and Russell are called to a burnt out car which has a body inside.

The squad investigates two homicides: the immolation of a would-be musician and the stabbing of a socialite. The newest detective to the squad, John Clark, Jr., attempts to both learn a new job and fit into the squad despite interference from his father.

The detectives tie the death of a pregnant woman to an adoption scam; Medavoy and Jones interview a woman who claims a masked assailant stole her valuable ring; and someone poisons Sipowicz's beloved fish.

A man who cared for his brain-damaged brother is found dead; Medavoy falls for a wealthy woman while investigating an apartment rental scam; Bale tries to nail a man who offered the detectives a bribe.