Chris and Mary Beth disagree about using a young informant to help them nab a drug dealer selling PCP to students.

The policewomen are assigned to track down a fellow officer who's been beating his wife.

While celebrating Petrie's promotion at a bar, squad members are robbed, an experience so humiliating to La Guardia that he resigns.

Efforts to arrest a diplomat's son for hit-and-run become tangled in red tape.

Members of a car-theft ring take Isbecki hostage after they learn he's a cop; Petrie becomes involved in the shooting of a black youth.

Family and job demands drive Mary Beth to the brink of a nervous breakdown.

The men in the squad room have little sympathy for a woman raped by a singer when they learn the victim picked the man up in a bar.

Chris takes the case of a murdered bag lady; the policewomen are asked to star in a recruiting commercial.

Mary Beth testifies in what should be an open-and-shut murder case; Chris helps a rape victim who is reluctant to take the stand a fifth time.

A new detective wants to prove herself to Chris and Mary Beth, who see her as a hotheaded novice.

Chris feels she has a good chance at snaring a notorious jewel thief.

A disabled girl's cynicism makes Chris all the more determined to recover the girl's stolen bicycle.

Chris and Mary Beth are teamed with the eager homicide detective Chris has been dating---who's using cocaine. Meanwhile a series of elderly deaths point to a greedy landlord trying to push out rent-controlled residents.

The squad searches for a sticky-fingered Santa inadvertently released from a holding cell; Petrie's wife is about to go into labor.

To crack aweapons case, Chris and Mary Beth need the help of a cop on the outs with the department.

A search for a missing woman leads Cagney and Lacey to a bigamy scam.

The team is assigned to spy on fellow officers after a leak is discovered during an investigation.

Samuels' job is in jeopardy after he locks horns with a deputy inspector over stranglings.

Harvey aids Chris and Mary Beth as they investigate the death of an ironworker who fell from a high-rise.

Criminals posing as cops are robbing salon patrons.

Chris and Mary Beth work overtime to nab a cop killer, which results in a family conflict for Mary Beth.

Chris and Mary Beth have conflicting perspectives of a fatal shooting.