Gangsters assault the 55th Precinct station.

Yokas negotiates when a young man threatens to kill his father.

A driver in a traffic tie-up goes on a shooting spree.

Cruz delves into a frightening cultic world.

Bosco dislikes being paired on patrol with Monroe.

Cruz seeks to put gang chieftain Marcel in prison.

Doctors arrive after a thief displays disease symptoms.

This episode is Part 1 of a crossover with Medical Investigation that concludes on "Half Life" (season 1 episode 17).

Cruz puts aside her troubles to pursue a gang member.

Finney races to help a boy who has been kidnapped.

The station is secretly evacuated.

The murder investigation of Davis' father nears a climax.

Sullivan and Monroe track down ex-cops to build a case.

Monroe's fellow cops discover she informed on Cruz.

Davis risks his career when he confronts Captain Finney.

Cruz confronts a nervous city councilman.

Cruz is denied bail and sent to Rykers on remand.

Internal Affairs takes Cruz into custody.

Yokas continues her uneasy partnership with Miller.

Recently promoted Yokas struggles with her new job.

Davis is assigned a new trainee.

Cruz fixes a crime scene after Yokas guns down a criminal.

Cruz and others are at the hospital dealing with victims.