Dory proposes to Christine, who has a few questions of her own she needs an answer to before she gives him one. Meanwhile, a long string of tiny thefts leads to big profit for an ingenious credit department employee.
After witnessing a stabbing, Chris becomes the target of the prepetrator, who has a history of making witnesses disappear. Meanwhile, the NYPD brass demand stress reduction classes for the 14th Precinct.
While Mary Beth recovers from breast surgery, and mulls retirement, Chris has her prized Corvette stolen, but it may provide her a leg up on the sergeant's exam. Meanwhile, an informant is murdered, leaving Chris to find out the who and why.
When the goddaughter of a mobster is murdered, the mobster (José Quintero) offers to have his gang investigate the crime and come up with a suspect. But anything the Mob does as a favor carries a price, and though this particular price is never stated, Mary Beth Lacey is adamant about refusing the offer and pursuing the killer through the regular legal channels. When Cagney and Lacey do find the killer through standard procedures, the mobster drives up to them, thanks them through his car window - and drives away.