Michael's former boss is accused of taking bribes; the man who killed Eddie's first wife is out on parole.
Danny is dead, apparently of a cult suicide.
A car-bombing seems politically motivated; Michael has a high-profile date.
An unstable undercover informant takes hostages, including Joan and wounded Manning.
Michael's chief witness in the murder of a union boss may be a Nazi war criminal.
The State Department upholds a gun-runner's diplomatic immunity.
The attorney general warns Michael not to reopen a case against a cop.
Michael's bombing investigation links a mobster and a respected lawyer to national politics.
Michael investigates serial mail-bombings and finds what may be a government cover-up.
A property-room narcotics theft points to Michael's team; Julie's alleged mob link; someone tries to kill Danny.
Michael assigns Lindsay a racially charged case; rumors tie Julie to the mob.
After Michael's informant dies unexpectedly, a restaurateur volunteers to help bring down a mobster.
Michael fails to help a former partner, whose girlfriend is then murdered; the police are after Danny.
Hayes becomes emotionally involved with a woman forced into a Chinese prostitution ring.
A gasoline-tax scam is motive for murders of Russian immigrants; loan sharks proposition Danny.
Hayes and team prosecute a right-wing radio talk-show host for inciting a militia man to murder.
A man claiming to have been wrongly accused of kidnapping sues the FBI for violation of his civil rights.
A bomb blast at a British art gallery is the work of Irish terrorists; Michael's nephew makes his first Holy Communion.
A 9-year-old dies of leukemia after an HMO denies an expensive test.
Hayes investigates corruption in the 29th precinct; Rebecca dies of her wounds.
A car-bombing investigation uncovers high-level political kickbacks.
A street-savvy ex-cop (David Caruso) becomes an idealistic federal prosecutor.