Ron Frazier

Bride-to-be Diane Chambers becomes the center of attention at a cozy bar called Cheers.

When a woman tries to murder her husband, Briscoe and Logan (Jerry Orbach, Chris Noth) investigate a doctor (guest star David Margulies) who has been using his own sperm to artificially inseminate his patients. Jordan Clarke and Donna Mitchell also guest star.

A man is found shot to death shortly after receiving help with a flat tire. Briscoe and Curtis find the "Good Samaritan", a hard-working suspect whom they arrest just minutes before his wedding. However, they arrest the wrong man and their first suspect turns out to be McCoy's only witness to the real killer. Between the cops ruining this man's wedding and the death threats if he testifies, McCoy's perfect witness refuses to come forward.

When a man is found brutally beaten, Detectives Briscoe (Jerry Orbach) and Curtis (Benjamin Bratt) must piece together a motive before they can find the culprits. A pair of protective brothers shed light on the case but confusion ensues as to who should be prosecuted for what crime. Later, Ross (Carey Lowell) discovers a shocking twist involving an unlikely accomplice. Sam Waterston, S. Epatha Merkerson and Steven Hill also star.

A serial killer has been mutilating the bodies of Eastbridge transients and homeless people -- and Tony begins to suspect the perpetrator's identity. In another development, an ill-prepared Tony is given last-minute charge of the annual benefit dance for the widows and orphan of police officers.